Replace QtSingleApplication with SingleApplication (#40)
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parent
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cmake_minimum_required(VERSION 2.8.11)
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set(CMAKE_CXX_STANDARD 11)
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set(SINGLEAPP-SOURCES
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qtlocalpeer.cpp
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qtsingleapplication.cpp
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qtsinglecoreapplication.cpp
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)
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set(SINGLEAPP-MOC-HEADERS
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qtlocalpeer.h
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qtsingleapplication.h
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qtsinglecoreapplication.h
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)
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if(UNIX)
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set(SINGLEAPP-SOURCES ${SINGLEAPP-SOURCES} qtlockedfile_unix.cpp)
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elseif(WIN32)
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set(SINGLEAPP-SOURCES ${SINGLEAPP-SOURCES} qtlockedfile_win.cpp)
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endif()
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QT5_WRAP_CPP(SINGLEAPP-SOURCES-MOC ${SINGLEAPP-MOC-HEADERS})
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ADD_LIBRARY(qtsingleapplication STATIC
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${SINGLEAPP-SOURCES}
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${SINGLEAPP-SOURCES-MOC}
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)
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target_link_libraries(qtsingleapplication Qt5::Core Qt5::Widgets Qt5::Network)
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include_directories(${CMAKE_BINARY_DIR}/src)
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@ -1,504 +0,0 @@
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||||||
It may happen that this requirement contradicts the license
|
|
||||||
restrictions of other proprietary libraries that do not normally
|
|
||||||
accompany the operating system. Such a contradiction means you cannot
|
|
||||||
use both them and the Library together in an executable that you
|
|
||||||
distribute.
|
|
||||||
|
|
||||||
7. You may place library facilities that are a work based on the
|
|
||||||
Library side-by-side in a single library together with other library
|
|
||||||
facilities not covered by this License, and distribute such a combined
|
|
||||||
library, provided that the separate distribution of the work based on
|
|
||||||
the Library and of the other library facilities is otherwise
|
|
||||||
permitted, and provided that you do these two things:
|
|
||||||
|
|
||||||
a) Accompany the combined library with a copy of the same work
|
|
||||||
based on the Library, uncombined with any other library
|
|
||||||
facilities. This must be distributed under the terms of the
|
|
||||||
Sections above.
|
|
||||||
|
|
||||||
b) Give prominent notice with the combined library of the fact
|
|
||||||
that part of it is a work based on the Library, and explaining
|
|
||||||
where to find the accompanying uncombined form of the same work.
|
|
||||||
|
|
||||||
8. You may not copy, modify, sublicense, link with, or distribute
|
|
||||||
the Library except as expressly provided under this License. Any
|
|
||||||
attempt otherwise to copy, modify, sublicense, link with, or
|
|
||||||
distribute the Library is void, and will automatically terminate your
|
|
||||||
rights under this License. However, parties who have received copies,
|
|
||||||
or rights, from you under this License will not have their licenses
|
|
||||||
terminated so long as such parties remain in full compliance.
|
|
||||||
|
|
||||||
9. You are not required to accept this License, since you have not
|
|
||||||
signed it. However, nothing else grants you permission to modify or
|
|
||||||
distribute the Library or its derivative works. These actions are
|
|
||||||
prohibited by law if you do not accept this License. Therefore, by
|
|
||||||
modifying or distributing the Library (or any work based on the
|
|
||||||
Library), you indicate your acceptance of this License to do so, and
|
|
||||||
all its terms and conditions for copying, distributing or modifying
|
|
||||||
the Library or works based on it.
|
|
||||||
|
|
||||||
10. Each time you redistribute the Library (or any work based on the
|
|
||||||
Library), the recipient automatically receives a license from the
|
|
||||||
original licensor to copy, distribute, link with or modify the Library
|
|
||||||
subject to these terms and conditions. You may not impose any further
|
|
||||||
restrictions on the recipients' exercise of the rights granted herein.
|
|
||||||
You are not responsible for enforcing compliance by third parties with
|
|
||||||
this License.
|
|
||||||
|
|
||||||
11. If, as a consequence of a court judgment or allegation of patent
|
|
||||||
infringement or for any other reason (not limited to patent issues),
|
|
||||||
conditions are imposed on you (whether by court order, agreement or
|
|
||||||
otherwise) that contradict the conditions of this License, they do not
|
|
||||||
excuse you from the conditions of this License. If you cannot
|
|
||||||
distribute so as to satisfy simultaneously your obligations under this
|
|
||||||
License and any other pertinent obligations, then as a consequence you
|
|
||||||
may not distribute the Library at all. For example, if a patent
|
|
||||||
license would not permit royalty-free redistribution of the Library by
|
|
||||||
all those who receive copies directly or indirectly through you, then
|
|
||||||
the only way you could satisfy both it and this License would be to
|
|
||||||
refrain entirely from distribution of the Library.
|
|
||||||
|
|
||||||
If any portion of this section is held invalid or unenforceable under any
|
|
||||||
particular circumstance, the balance of the section is intended to apply,
|
|
||||||
and the section as a whole is intended to apply in other circumstances.
|
|
||||||
|
|
||||||
It is not the purpose of this section to induce you to infringe any
|
|
||||||
patents or other property right claims or to contest validity of any
|
|
||||||
such claims; this section has the sole purpose of protecting the
|
|
||||||
integrity of the free software distribution system which is
|
|
||||||
implemented by public license practices. Many people have made
|
|
||||||
generous contributions to the wide range of software distributed
|
|
||||||
through that system in reliance on consistent application of that
|
|
||||||
system; it is up to the author/donor to decide if he or she is willing
|
|
||||||
to distribute software through any other system and a licensee cannot
|
|
||||||
impose that choice.
|
|
||||||
|
|
||||||
This section is intended to make thoroughly clear what is believed to
|
|
||||||
be a consequence of the rest of this License.
|
|
||||||
|
|
||||||
12. If the distribution and/or use of the Library is restricted in
|
|
||||||
certain countries either by patents or by copyrighted interfaces, the
|
|
||||||
original copyright holder who places the Library under this License may add
|
|
||||||
an explicit geographical distribution limitation excluding those countries,
|
|
||||||
so that distribution is permitted only in or among countries not thus
|
|
||||||
excluded. In such case, this License incorporates the limitation as if
|
|
||||||
written in the body of this License.
|
|
||||||
|
|
||||||
13. The Free Software Foundation may publish revised and/or new
|
|
||||||
versions of the Lesser General Public License from time to time.
|
|
||||||
Such new versions will be similar in spirit to the present version,
|
|
||||||
but may differ in detail to address new problems or concerns.
|
|
||||||
|
|
||||||
Each version is given a distinguishing version number. If the Library
|
|
||||||
specifies a version number of this License which applies to it and
|
|
||||||
"any later version", you have the option of following the terms and
|
|
||||||
conditions either of that version or of any later version published by
|
|
||||||
the Free Software Foundation. If the Library does not specify a
|
|
||||||
license version number, you may choose any version ever published by
|
|
||||||
the Free Software Foundation.
|
|
||||||
|
|
||||||
14. If you wish to incorporate parts of the Library into other free
|
|
||||||
programs whose distribution conditions are incompatible with these,
|
|
||||||
write to the author to ask for permission. For software which is
|
|
||||||
copyrighted by the Free Software Foundation, write to the Free
|
|
||||||
Software Foundation; we sometimes make exceptions for this. Our
|
|
||||||
decision will be guided by the two goals of preserving the free status
|
|
||||||
of all derivatives of our free software and of promoting the sharing
|
|
||||||
and reuse of software generally.
|
|
||||||
|
|
||||||
NO WARRANTY
|
|
||||||
|
|
||||||
15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
|
|
||||||
WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
|
|
||||||
EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
|
|
||||||
OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
|
|
||||||
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
|
|
||||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
||||||
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
|
|
||||||
LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
|
|
||||||
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
|
||||||
|
|
||||||
16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
|
|
||||||
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
|
|
||||||
AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
|
|
||||||
FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
|
|
||||||
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
|
|
||||||
LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
|
|
||||||
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
|
|
||||||
FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
|
|
||||||
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
|
|
||||||
DAMAGES.
|
|
||||||
|
|
||||||
END OF TERMS AND CONDITIONS
|
|
||||||
|
|
||||||
How to Apply These Terms to Your New Libraries
|
|
||||||
|
|
||||||
If you develop a new library, and you want it to be of the greatest
|
|
||||||
possible use to the public, we recommend making it free software that
|
|
||||||
everyone can redistribute and change. You can do so by permitting
|
|
||||||
redistribution under these terms (or, alternatively, under the terms of the
|
|
||||||
ordinary General Public License).
|
|
||||||
|
|
||||||
To apply these terms, attach the following notices to the library. It is
|
|
||||||
safest to attach them to the start of each source file to most effectively
|
|
||||||
convey the exclusion of warranty; and each file should have at least the
|
|
||||||
"copyright" line and a pointer to where the full notice is found.
|
|
||||||
|
|
||||||
<one line to give the library's name and a brief idea of what it does.>
|
|
||||||
Copyright (C) <year> <name of author>
|
|
||||||
|
|
||||||
This library is free software; you can redistribute it and/or
|
|
||||||
modify it under the terms of the GNU Lesser General Public
|
|
||||||
License as published by the Free Software Foundation; either
|
|
||||||
version 2.1 of the License, or (at your option) any later version.
|
|
||||||
|
|
||||||
This library is distributed in the hope that it will be useful,
|
|
||||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
||||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
||||||
Lesser General Public License for more details.
|
|
||||||
|
|
||||||
You should have received a copy of the GNU Lesser General Public
|
|
||||||
License along with this library; if not, write to the Free Software
|
|
||||||
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
||||||
|
|
||||||
Also add information on how to contact you by electronic and paper mail.
|
|
||||||
|
|
||||||
You should also get your employer (if you work as a programmer) or your
|
|
||||||
school, if any, to sign a "copyright disclaimer" for the library, if
|
|
||||||
necessary. Here is a sample; alter the names:
|
|
||||||
|
|
||||||
Yoyodyne, Inc., hereby disclaims all copyright interest in the
|
|
||||||
library `Frob' (a library for tweaking knobs) written by James Random Hacker.
|
|
||||||
|
|
||||||
<signature of Ty Coon>, 1 April 1990
|
|
||||||
Ty Coon, President of Vice
|
|
||||||
|
|
||||||
That's all there is to it!
|
|
||||||
|
|
||||||
|
|
|
@ -1,210 +0,0 @@
|
||||||
/****************************************************************************
|
|
||||||
**
|
|
||||||
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
|
|
||||||
** All rights reserved.
|
|
||||||
**
|
|
||||||
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
||||||
**
|
|
||||||
** This file is part of a Qt Solutions component.
|
|
||||||
**
|
|
||||||
** You may use this file under the terms of the BSD license as follows:
|
|
||||||
**
|
|
||||||
** "Redistribution and use in source and binary forms, with or without
|
|
||||||
** modification, are permitted provided that the following conditions are
|
|
||||||
** met:
|
|
||||||
** * Redistributions of source code must retain the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer.
|
|
||||||
** * Redistributions in binary form must reproduce the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer in
|
|
||||||
** the documentation and/or other materials provided with the
|
|
||||||
** distribution.
|
|
||||||
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
|
|
||||||
** the names of its contributors may be used to endorse or promote
|
|
||||||
** products derived from this software without specific prior written
|
|
||||||
** permission.
|
|
||||||
**
|
|
||||||
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
||||||
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
||||||
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
||||||
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
||||||
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
||||||
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
||||||
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
||||||
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
||||||
**
|
|
||||||
****************************************************************************/
|
|
||||||
|
|
||||||
|
|
||||||
#include "qtlocalpeer.h"
|
|
||||||
|
|
||||||
#include <unistd.h>
|
|
||||||
|
|
||||||
#include <QtGlobal>
|
|
||||||
#include <QCoreApplication>
|
|
||||||
#include <QObject>
|
|
||||||
#include <QAbstractSocket>
|
|
||||||
#include <QByteArray>
|
|
||||||
#include <QChar>
|
|
||||||
#include <QDataStream>
|
|
||||||
#include <QDir>
|
|
||||||
#include <QFile>
|
|
||||||
#include <QIODevice>
|
|
||||||
#include <QLocalServer>
|
|
||||||
#include <QLocalSocket>
|
|
||||||
#include <QRegExp>
|
|
||||||
|
|
||||||
#if defined(Q_OS_WIN)
|
|
||||||
#include <qt_windows.h>
|
|
||||||
#include <QLibrary>
|
|
||||||
|
|
||||||
typedef BOOL(WINAPI*PProcessIdToSessionId)(DWORD,DWORD*);
|
|
||||||
static PProcessIdToSessionId pProcessIdToSessionId = 0;
|
|
||||||
#endif
|
|
||||||
#if defined(Q_OS_UNIX)
|
|
||||||
#include <time.h>
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#include "qtlockedfile.cpp"
|
|
||||||
#if defined(Q_OS_WIN)
|
|
||||||
#include "qtlockedfile_win.cpp"
|
|
||||||
#else
|
|
||||||
#include "qtlockedfile_unix.cpp"
|
|
||||||
#endif
|
|
||||||
|
|
||||||
const char* QtLocalPeer::ack = "ack";
|
|
||||||
|
|
||||||
QtLocalPeer::QtLocalPeer(QObject* parent, const QString &appId)
|
|
||||||
: QObject(parent), id(appId)
|
|
||||||
{
|
|
||||||
QString prefix = id;
|
|
||||||
if (id.isEmpty()) {
|
|
||||||
id = QCoreApplication::applicationFilePath();
|
|
||||||
#if defined(Q_OS_WIN)
|
|
||||||
id = id.toLower();
|
|
||||||
#endif
|
|
||||||
prefix = id.section(QLatin1Char('/'), -1);
|
|
||||||
}
|
|
||||||
prefix.remove(QRegExp("[^a-zA-Z]"));
|
|
||||||
prefix.truncate(6);
|
|
||||||
|
|
||||||
QByteArray idc = id.toUtf8();
|
|
||||||
quint16 idNum = qChecksum(idc.constData(), idc.size());
|
|
||||||
socketName = QLatin1String("qtsingleapp-") + prefix + QLatin1Char('-') + QString::number(idNum, 16);
|
|
||||||
|
|
||||||
#if defined(Q_OS_WIN)
|
|
||||||
if (!pProcessIdToSessionId) {
|
|
||||||
QLibrary lib("kernel32");
|
|
||||||
pProcessIdToSessionId = (PProcessIdToSessionId)lib.resolve("ProcessIdToSessionId");
|
|
||||||
}
|
|
||||||
if (pProcessIdToSessionId) {
|
|
||||||
DWORD sessionId = 0;
|
|
||||||
pProcessIdToSessionId(GetCurrentProcessId(), &sessionId);
|
|
||||||
socketName += QLatin1Char('-') + QString::number(sessionId, 16);
|
|
||||||
}
|
|
||||||
#else
|
|
||||||
socketName += QLatin1Char('-') + QString::number(::getuid(), 16);
|
|
||||||
#endif
|
|
||||||
|
|
||||||
server = new QLocalServer(this);
|
|
||||||
QString lockName = QDir(QDir::tempPath()).absolutePath() + QLatin1Char('/') + socketName + QLatin1String("-lockfile");
|
|
||||||
lockFile.setFileName(lockName);
|
|
||||||
lockFile.open(QIODevice::ReadWrite);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
bool QtLocalPeer::isClient()
|
|
||||||
{
|
|
||||||
if (lockFile.isLocked())
|
|
||||||
return false;
|
|
||||||
|
|
||||||
if (!lockFile.lock(QtLockedFile::WriteLock, false))
|
|
||||||
return true;
|
|
||||||
|
|
||||||
bool res = server->listen(socketName);
|
|
||||||
#ifdef Q_OS_UNIX
|
|
||||||
// ### Workaround
|
|
||||||
if (!res && server->serverError() == QAbstractSocket::AddressInUseError) {
|
|
||||||
QFile::remove(QDir::cleanPath(QDir::tempPath())+QLatin1Char('/')+socketName);
|
|
||||||
res = server->listen(socketName);
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
if (!res)
|
|
||||||
qWarning("QtSingleCoreApplication: listen on local socket failed, %s", qPrintable(server->errorString()));
|
|
||||||
QObject::connect(server, SIGNAL(newConnection()), SLOT(receiveConnection()));
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
bool QtLocalPeer::sendMessage(const QString &message, int timeout)
|
|
||||||
{
|
|
||||||
if (!isClient())
|
|
||||||
return false;
|
|
||||||
|
|
||||||
QLocalSocket socket;
|
|
||||||
bool connOk = false;
|
|
||||||
for(int i = 0; i < 2; i++) {
|
|
||||||
// Try twice, in case the other instance is just starting up
|
|
||||||
socket.connectToServer(socketName);
|
|
||||||
connOk = socket.waitForConnected(timeout/2);
|
|
||||||
if (connOk || i)
|
|
||||||
break;
|
|
||||||
int ms = 250;
|
|
||||||
#ifdef Q_OS_WIN
|
|
||||||
Sleep(DWORD(ms));
|
|
||||||
#else
|
|
||||||
struct timespec ts = { ms / 1000, (ms % 1000) * 1000 * 1000 };
|
|
||||||
nanosleep(&ts, nullptr);
|
|
||||||
#endif
|
|
||||||
}
|
|
||||||
if (!connOk)
|
|
||||||
return false;
|
|
||||||
|
|
||||||
QByteArray uMsg(message.toUtf8());
|
|
||||||
QDataStream ds(&socket);
|
|
||||||
ds.writeBytes(uMsg.constData(), uMsg.size());
|
|
||||||
bool res = socket.waitForBytesWritten(timeout);
|
|
||||||
if (res) {
|
|
||||||
res &= socket.waitForReadyRead(timeout); // wait for ack
|
|
||||||
if (res)
|
|
||||||
res &= (socket.read(qstrlen(ack)) == ack);
|
|
||||||
}
|
|
||||||
return res;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
void QtLocalPeer::receiveConnection()
|
|
||||||
{
|
|
||||||
QLocalSocket* socket = server->nextPendingConnection();
|
|
||||||
if (!socket)
|
|
||||||
return;
|
|
||||||
|
|
||||||
while (socket->bytesAvailable() < (int)sizeof(quint32))
|
|
||||||
socket->waitForReadyRead();
|
|
||||||
QDataStream ds(socket);
|
|
||||||
QByteArray uMsg;
|
|
||||||
quint32 remaining;
|
|
||||||
ds >> remaining;
|
|
||||||
uMsg.resize(remaining);
|
|
||||||
int got = 0;
|
|
||||||
char* uMsgBuf = uMsg.data();
|
|
||||||
do {
|
|
||||||
got = ds.readRawData(uMsgBuf, remaining);
|
|
||||||
remaining -= got;
|
|
||||||
uMsgBuf += got;
|
|
||||||
}
|
|
||||||
while (remaining && got >= 0 && socket->waitForReadyRead(2000));
|
|
||||||
if (got < 0) {
|
|
||||||
qWarning("QtLocalPeer: Message reception failed %s", socket->errorString().toLatin1().constData());
|
|
||||||
delete socket;
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
QString message(QString::fromUtf8(uMsg));
|
|
||||||
socket->write(ack, qstrlen(ack));
|
|
||||||
socket->waitForBytesWritten(1000);
|
|
||||||
delete socket;
|
|
||||||
emit messageReceived(message); //### (might take a long time to return)
|
|
||||||
}
|
|
|
@ -1,76 +0,0 @@
|
||||||
/****************************************************************************
|
|
||||||
**
|
|
||||||
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
|
|
||||||
** All rights reserved.
|
|
||||||
**
|
|
||||||
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
||||||
**
|
|
||||||
** This file is part of a Qt Solutions component.
|
|
||||||
**
|
|
||||||
** You may use this file under the terms of the BSD license as follows:
|
|
||||||
**
|
|
||||||
** "Redistribution and use in source and binary forms, with or without
|
|
||||||
** modification, are permitted provided that the following conditions are
|
|
||||||
** met:
|
|
||||||
** * Redistributions of source code must retain the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer.
|
|
||||||
** * Redistributions in binary form must reproduce the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer in
|
|
||||||
** the documentation and/or other materials provided with the
|
|
||||||
** distribution.
|
|
||||||
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
|
|
||||||
** the names of its contributors may be used to endorse or promote
|
|
||||||
** products derived from this software without specific prior written
|
|
||||||
** permission.
|
|
||||||
**
|
|
||||||
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
||||||
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
||||||
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
||||||
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
||||||
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
||||||
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
||||||
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
||||||
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
||||||
**
|
|
||||||
****************************************************************************/
|
|
||||||
|
|
||||||
#ifndef QTLOCALPEER_H
|
|
||||||
#define QTLOCALPEER_H
|
|
||||||
|
|
||||||
#include <QObject>
|
|
||||||
#include <QString>
|
|
||||||
#include <QLocalServer>
|
|
||||||
|
|
||||||
#include "qtlockedfile.h"
|
|
||||||
|
|
||||||
class QtLocalPeer : public QObject
|
|
||||||
{
|
|
||||||
Q_OBJECT
|
|
||||||
|
|
||||||
public:
|
|
||||||
QtLocalPeer(QObject *parent = 0, const QString &appId = QString());
|
|
||||||
bool isClient();
|
|
||||||
bool sendMessage(const QString &message, int timeout);
|
|
||||||
QString applicationId() const
|
|
||||||
{ return id; }
|
|
||||||
|
|
||||||
Q_SIGNALS:
|
|
||||||
void messageReceived(const QString &message);
|
|
||||||
|
|
||||||
protected Q_SLOTS:
|
|
||||||
void receiveConnection();
|
|
||||||
|
|
||||||
protected:
|
|
||||||
QString id;
|
|
||||||
QString socketName;
|
|
||||||
QLocalServer *server;
|
|
||||||
QtLockedFile lockFile;
|
|
||||||
|
|
||||||
private:
|
|
||||||
static const char* ack;
|
|
||||||
};
|
|
||||||
|
|
||||||
#endif // QTLOCALPEER_H
|
|
|
@ -1,195 +0,0 @@
|
||||||
/****************************************************************************
|
|
||||||
**
|
|
||||||
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
|
|
||||||
** All rights reserved.
|
|
||||||
**
|
|
||||||
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
||||||
**
|
|
||||||
** This file is part of a Qt Solutions component.
|
|
||||||
**
|
|
||||||
** You may use this file under the terms of the BSD license as follows:
|
|
||||||
**
|
|
||||||
** "Redistribution and use in source and binary forms, with or without
|
|
||||||
** modification, are permitted provided that the following conditions are
|
|
||||||
** met:
|
|
||||||
** * Redistributions of source code must retain the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer.
|
|
||||||
** * Redistributions in binary form must reproduce the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer in
|
|
||||||
** the documentation and/or other materials provided with the
|
|
||||||
** distribution.
|
|
||||||
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
|
|
||||||
** the names of its contributors may be used to endorse or promote
|
|
||||||
** products derived from this software without specific prior written
|
|
||||||
** permission.
|
|
||||||
**
|
|
||||||
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
||||||
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
||||||
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
||||||
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
||||||
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
||||||
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
||||||
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
||||||
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
||||||
**
|
|
||||||
****************************************************************************/
|
|
||||||
|
|
||||||
#include <QFile>
|
|
||||||
#include <QString>
|
|
||||||
|
|
||||||
#include "qtlockedfile.h"
|
|
||||||
|
|
||||||
/*!
|
|
||||||
\class QtLockedFile
|
|
||||||
|
|
||||||
\brief The QtLockedFile class extends QFile with advisory locking
|
|
||||||
functions.
|
|
||||||
|
|
||||||
A file may be locked in read or write mode. Multiple instances of
|
|
||||||
\e QtLockedFile, created in multiple processes running on the same
|
|
||||||
machine, may have a file locked in read mode. Exactly one instance
|
|
||||||
may have it locked in write mode. A read and a write lock cannot
|
|
||||||
exist simultaneously on the same file.
|
|
||||||
|
|
||||||
The file locks are advisory. This means that nothing prevents
|
|
||||||
another process from manipulating a locked file using QFile or
|
|
||||||
file system functions offered by the OS. Serialization is only
|
|
||||||
guaranteed if all processes that access the file use
|
|
||||||
QLockedFile. Also, while holding a lock on a file, a process
|
|
||||||
must not open the same file again (through any API), or locks
|
|
||||||
can be unexpectedly lost.
|
|
||||||
|
|
||||||
The lock provided by an instance of \e QtLockedFile is released
|
|
||||||
whenever the program terminates. This is true even when the
|
|
||||||
program crashes and no destructors are called.
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*! \enum QtLockedFile::LockMode
|
|
||||||
|
|
||||||
This enum describes the available lock modes.
|
|
||||||
|
|
||||||
\value ReadLock A read lock.
|
|
||||||
\value WriteLock A write lock.
|
|
||||||
\value NoLock Neither a read lock nor a write lock.
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Constructs an unlocked \e QtLockedFile object. This constructor
|
|
||||||
behaves in the same way as \e QFile::QFile().
|
|
||||||
|
|
||||||
\sa QFile::QFile()
|
|
||||||
*/
|
|
||||||
QtLockedFile::QtLockedFile()
|
|
||||||
: QFile()
|
|
||||||
{
|
|
||||||
#ifdef Q_OS_WIN
|
|
||||||
wmutex = 0;
|
|
||||||
rmutex = 0;
|
|
||||||
#endif
|
|
||||||
m_lock_mode = NoLock;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Constructs an unlocked QtLockedFile object with file \a name. This
|
|
||||||
constructor behaves in the same way as \e QFile::QFile(const
|
|
||||||
QString&).
|
|
||||||
|
|
||||||
\sa QFile::QFile()
|
|
||||||
*/
|
|
||||||
QtLockedFile::QtLockedFile(const QString &name)
|
|
||||||
: QFile(name)
|
|
||||||
{
|
|
||||||
#ifdef Q_OS_WIN
|
|
||||||
wmutex = 0;
|
|
||||||
rmutex = 0;
|
|
||||||
#endif
|
|
||||||
m_lock_mode = NoLock;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Opens the file in OpenMode \a mode.
|
|
||||||
|
|
||||||
This is identical to QFile::open(), with the one exception that the
|
|
||||||
Truncate mode flag is disallowed. Truncation would conflict with the
|
|
||||||
advisory file locking, since the file would be modified before the
|
|
||||||
write lock is obtained. If truncation is required, use resize(0)
|
|
||||||
after obtaining the write lock.
|
|
||||||
|
|
||||||
Returns true if successful; otherwise false.
|
|
||||||
|
|
||||||
\sa QFile::open(), QFile::resize()
|
|
||||||
*/
|
|
||||||
bool QtLockedFile::open(OpenMode mode)
|
|
||||||
{
|
|
||||||
if (mode & QIODevice::Truncate) {
|
|
||||||
qWarning("QtLockedFile::open(): Truncate mode not allowed.");
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
return QFile::open(mode);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Returns \e true if this object has a in read or write lock;
|
|
||||||
otherwise returns \e false.
|
|
||||||
|
|
||||||
\sa lockMode()
|
|
||||||
*/
|
|
||||||
bool QtLockedFile::isLocked() const
|
|
||||||
{
|
|
||||||
return m_lock_mode != NoLock;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Returns the type of lock currently held by this object, or \e
|
|
||||||
QtLockedFile::NoLock.
|
|
||||||
|
|
||||||
\sa isLocked()
|
|
||||||
*/
|
|
||||||
QtLockedFile::LockMode QtLockedFile::lockMode() const
|
|
||||||
{
|
|
||||||
return m_lock_mode;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*!
|
|
||||||
\fn bool QtLockedFile::lock(LockMode mode, bool block = true)
|
|
||||||
|
|
||||||
Obtains a lock of type \a mode. The file must be opened before it
|
|
||||||
can be locked.
|
|
||||||
|
|
||||||
If \a block is true, this function will block until the lock is
|
|
||||||
aquired. If \a block is false, this function returns \e false
|
|
||||||
immediately if the lock cannot be aquired.
|
|
||||||
|
|
||||||
If this object already has a lock of type \a mode, this function
|
|
||||||
returns \e true immediately. If this object has a lock of a
|
|
||||||
different type than \a mode, the lock is first released and then a
|
|
||||||
new lock is obtained.
|
|
||||||
|
|
||||||
This function returns \e true if, after it executes, the file is
|
|
||||||
locked by this object, and \e false otherwise.
|
|
||||||
|
|
||||||
\sa unlock(), isLocked(), lockMode()
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*!
|
|
||||||
\fn bool QtLockedFile::unlock()
|
|
||||||
|
|
||||||
Releases a lock.
|
|
||||||
|
|
||||||
If the object has no lock, this function returns immediately.
|
|
||||||
|
|
||||||
This function returns \e true if, after it executes, the file is
|
|
||||||
not locked by this object, and \e false otherwise.
|
|
||||||
|
|
||||||
\sa lock(), isLocked(), lockMode()
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*!
|
|
||||||
\fn QtLockedFile::~QtLockedFile()
|
|
||||||
|
|
||||||
Destroys the \e QtLockedFile object. If any locks were held, they
|
|
||||||
are released.
|
|
||||||
*/
|
|
|
@ -1,94 +0,0 @@
|
||||||
/****************************************************************************
|
|
||||||
**
|
|
||||||
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
|
|
||||||
** All rights reserved.
|
|
||||||
**
|
|
||||||
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
||||||
**
|
|
||||||
** This file is part of a Qt Solutions component.
|
|
||||||
**
|
|
||||||
** You may use this file under the terms of the BSD license as follows:
|
|
||||||
**
|
|
||||||
** "Redistribution and use in source and binary forms, with or without
|
|
||||||
** modification, are permitted provided that the following conditions are
|
|
||||||
** met:
|
|
||||||
** * Redistributions of source code must retain the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer.
|
|
||||||
** * Redistributions in binary form must reproduce the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer in
|
|
||||||
** the documentation and/or other materials provided with the
|
|
||||||
** distribution.
|
|
||||||
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
|
|
||||||
** the names of its contributors may be used to endorse or promote
|
|
||||||
** products derived from this software without specific prior written
|
|
||||||
** permission.
|
|
||||||
**
|
|
||||||
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
||||||
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
||||||
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
||||||
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
||||||
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
||||||
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
||||||
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
||||||
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
||||||
**
|
|
||||||
****************************************************************************/
|
|
||||||
|
|
||||||
#ifndef QTLOCKEDFILE_H
|
|
||||||
#define QTLOCKEDFILE_H
|
|
||||||
|
|
||||||
#include <QFile>
|
|
||||||
#ifdef Q_OS_WIN
|
|
||||||
#include <QVector>
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#if defined(Q_OS_WIN)
|
|
||||||
# if !defined(QT_QTLOCKEDFILE_EXPORT) && !defined(QT_QTLOCKEDFILE_IMPORT)
|
|
||||||
# define QT_QTLOCKEDFILE_EXPORT
|
|
||||||
# elif defined(QT_QTLOCKEDFILE_IMPORT)
|
|
||||||
# if defined(QT_QTLOCKEDFILE_EXPORT)
|
|
||||||
# undef QT_QTLOCKEDFILE_EXPORT
|
|
||||||
# endif
|
|
||||||
# define QT_QTLOCKEDFILE_EXPORT __declspec(dllimport)
|
|
||||||
# elif defined(QT_QTLOCKEDFILE_EXPORT)
|
|
||||||
# undef QT_QTLOCKEDFILE_EXPORT
|
|
||||||
# define QT_QTLOCKEDFILE_EXPORT __declspec(dllexport)
|
|
||||||
# endif
|
|
||||||
#else
|
|
||||||
# define QT_QTLOCKEDFILE_EXPORT
|
|
||||||
#endif
|
|
||||||
|
|
||||||
class QT_QTLOCKEDFILE_EXPORT QtLockedFile : public QFile
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
enum LockMode { NoLock = 0, ReadLock, WriteLock };
|
|
||||||
|
|
||||||
QtLockedFile();
|
|
||||||
QtLockedFile(const QString &name);
|
|
||||||
~QtLockedFile();
|
|
||||||
|
|
||||||
bool open(OpenMode mode);
|
|
||||||
|
|
||||||
bool lock(LockMode mode, bool block = true);
|
|
||||||
bool unlock();
|
|
||||||
bool isLocked() const;
|
|
||||||
LockMode lockMode() const;
|
|
||||||
|
|
||||||
private:
|
|
||||||
#ifdef Q_OS_WIN
|
|
||||||
Qt::HANDLE wmutex;
|
|
||||||
Qt::HANDLE rmutex;
|
|
||||||
QVector<Qt::HANDLE> rmutexes;
|
|
||||||
QString mutexname;
|
|
||||||
|
|
||||||
Qt::HANDLE getMutexHandle(int idx, bool doCreate);
|
|
||||||
bool waitMutex(Qt::HANDLE mutex, bool doBlock);
|
|
||||||
|
|
||||||
#endif
|
|
||||||
LockMode m_lock_mode;
|
|
||||||
};
|
|
||||||
|
|
||||||
#endif
|
|
|
@ -1,114 +0,0 @@
|
||||||
/****************************************************************************
|
|
||||||
**
|
|
||||||
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
|
|
||||||
** All rights reserved.
|
|
||||||
**
|
|
||||||
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
||||||
**
|
|
||||||
** This file is part of a Qt Solutions component.
|
|
||||||
**
|
|
||||||
** You may use this file under the terms of the BSD license as follows:
|
|
||||||
**
|
|
||||||
** "Redistribution and use in source and binary forms, with or without
|
|
||||||
** modification, are permitted provided that the following conditions are
|
|
||||||
** met:
|
|
||||||
** * Redistributions of source code must retain the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer.
|
|
||||||
** * Redistributions in binary form must reproduce the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer in
|
|
||||||
** the documentation and/or other materials provided with the
|
|
||||||
** distribution.
|
|
||||||
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
|
|
||||||
** the names of its contributors may be used to endorse or promote
|
|
||||||
** products derived from this software without specific prior written
|
|
||||||
** permission.
|
|
||||||
**
|
|
||||||
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
||||||
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
||||||
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
||||||
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
||||||
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
||||||
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
||||||
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
||||||
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
||||||
**
|
|
||||||
****************************************************************************/
|
|
||||||
|
|
||||||
#include <string.h>
|
|
||||||
#include <errno.h>
|
|
||||||
#include <unistd.h>
|
|
||||||
#include <fcntl.h>
|
|
||||||
|
|
||||||
#include "qtlockedfile.h"
|
|
||||||
|
|
||||||
bool QtLockedFile::lock(LockMode mode, bool block)
|
|
||||||
{
|
|
||||||
if (!isOpen()) {
|
|
||||||
qWarning("QtLockedFile::lock(): file is not opened");
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (mode == NoLock)
|
|
||||||
return unlock();
|
|
||||||
|
|
||||||
if (mode == m_lock_mode)
|
|
||||||
return true;
|
|
||||||
|
|
||||||
if (m_lock_mode != NoLock)
|
|
||||||
unlock();
|
|
||||||
|
|
||||||
struct flock fl;
|
|
||||||
fl.l_whence = SEEK_SET;
|
|
||||||
fl.l_start = 0;
|
|
||||||
fl.l_len = 0;
|
|
||||||
fl.l_type = (mode == ReadLock) ? F_RDLCK : F_WRLCK;
|
|
||||||
int cmd = block ? F_SETLKW : F_SETLK;
|
|
||||||
int ret = fcntl(handle(), cmd, &fl);
|
|
||||||
|
|
||||||
if (ret == -1) {
|
|
||||||
if (errno != EINTR && errno != EAGAIN)
|
|
||||||
qWarning("QtLockedFile::lock(): fcntl: %s", strerror(errno));
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
m_lock_mode = mode;
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
bool QtLockedFile::unlock()
|
|
||||||
{
|
|
||||||
if (!isOpen()) {
|
|
||||||
qWarning("QtLockedFile::unlock(): file is not opened");
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!isLocked())
|
|
||||||
return true;
|
|
||||||
|
|
||||||
struct flock fl;
|
|
||||||
fl.l_whence = SEEK_SET;
|
|
||||||
fl.l_start = 0;
|
|
||||||
fl.l_len = 0;
|
|
||||||
fl.l_type = F_UNLCK;
|
|
||||||
int ret = fcntl(handle(), F_SETLKW, &fl);
|
|
||||||
|
|
||||||
if (ret == -1) {
|
|
||||||
qWarning("QtLockedFile::lock(): fcntl: %s", strerror(errno));
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
m_lock_mode = NoLock;
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
|
|
||||||
QtLockedFile::~QtLockedFile()
|
|
||||||
{
|
|
||||||
if (isOpen())
|
|
||||||
unlock();
|
|
||||||
}
|
|
||||||
|
|
|
@ -1,203 +0,0 @@
|
||||||
/****************************************************************************
|
|
||||||
**
|
|
||||||
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
|
|
||||||
** All rights reserved.
|
|
||||||
**
|
|
||||||
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
||||||
**
|
|
||||||
** This file is part of a Qt Solutions component.
|
|
||||||
**
|
|
||||||
** You may use this file under the terms of the BSD license as follows:
|
|
||||||
**
|
|
||||||
** "Redistribution and use in source and binary forms, with or without
|
|
||||||
** modification, are permitted provided that the following conditions are
|
|
||||||
** met:
|
|
||||||
** * Redistributions of source code must retain the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer.
|
|
||||||
** * Redistributions in binary form must reproduce the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer in
|
|
||||||
** the documentation and/or other materials provided with the
|
|
||||||
** distribution.
|
|
||||||
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
|
|
||||||
** the names of its contributors may be used to endorse or promote
|
|
||||||
** products derived from this software without specific prior written
|
|
||||||
** permission.
|
|
||||||
**
|
|
||||||
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
||||||
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
||||||
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
||||||
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
||||||
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
||||||
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
||||||
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
||||||
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
||||||
**
|
|
||||||
****************************************************************************/
|
|
||||||
|
|
||||||
#include <QFileInfo>
|
|
||||||
|
|
||||||
#include "qtlockedfile.h"
|
|
||||||
#include <qt_windows.h>
|
|
||||||
|
|
||||||
#define MUTEX_PREFIX "QtLockedFile mutex "
|
|
||||||
// Maximum number of concurrent read locks. Must not be greater than MAXIMUM_WAIT_OBJECTS
|
|
||||||
#define MAX_READERS MAXIMUM_WAIT_OBJECTS
|
|
||||||
|
|
||||||
Qt::HANDLE QtLockedFile::getMutexHandle(int idx, bool doCreate)
|
|
||||||
{
|
|
||||||
if (mutexname.isEmpty()) {
|
|
||||||
QFileInfo fi(*this);
|
|
||||||
mutexname = QString::fromLatin1(MUTEX_PREFIX) + fi.absoluteFilePath().toLower();
|
|
||||||
}
|
|
||||||
QString mname(mutexname);
|
|
||||||
if (idx >= 0)
|
|
||||||
mname += QString::number(idx);
|
|
||||||
|
|
||||||
Qt::HANDLE mutex;
|
|
||||||
if (doCreate) {
|
|
||||||
mutex = CreateMutexW(nullptr, FALSE, (WCHAR*)mname.utf16());
|
|
||||||
if (!mutex) {
|
|
||||||
qErrnoWarning("QtLockedFile::lock(): CreateMutex failed");
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
mutex = OpenMutexW(SYNCHRONIZE | MUTEX_MODIFY_STATE, FALSE, (WCHAR*)mname.utf16());
|
|
||||||
if (!mutex) {
|
|
||||||
if (GetLastError() != ERROR_FILE_NOT_FOUND)
|
|
||||||
qErrnoWarning("QtLockedFile::lock(): OpenMutex failed");
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return mutex;
|
|
||||||
}
|
|
||||||
|
|
||||||
bool QtLockedFile::waitMutex(Qt::HANDLE mutex, bool doBlock)
|
|
||||||
{
|
|
||||||
Q_ASSERT(mutex);
|
|
||||||
DWORD res = WaitForSingleObject(mutex, doBlock ? INFINITE : 0);
|
|
||||||
switch (res) {
|
|
||||||
case WAIT_OBJECT_0:
|
|
||||||
case WAIT_ABANDONED:
|
|
||||||
return true;
|
|
||||||
break;
|
|
||||||
case WAIT_TIMEOUT:
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
qErrnoWarning("QtLockedFile::lock(): WaitForSingleObject failed");
|
|
||||||
}
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
bool QtLockedFile::lock(LockMode mode, bool block)
|
|
||||||
{
|
|
||||||
if (!isOpen()) {
|
|
||||||
qWarning("QtLockedFile::lock(): file is not opened");
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (mode == NoLock)
|
|
||||||
return unlock();
|
|
||||||
|
|
||||||
if (mode == m_lock_mode)
|
|
||||||
return true;
|
|
||||||
|
|
||||||
if (m_lock_mode != NoLock)
|
|
||||||
unlock();
|
|
||||||
|
|
||||||
if (!wmutex && !(wmutex = getMutexHandle(-1, true)))
|
|
||||||
return false;
|
|
||||||
|
|
||||||
if (!waitMutex(wmutex, block))
|
|
||||||
return false;
|
|
||||||
|
|
||||||
if (mode == ReadLock) {
|
|
||||||
int idx = 0;
|
|
||||||
for (; idx < MAX_READERS; idx++) {
|
|
||||||
rmutex = getMutexHandle(idx, false);
|
|
||||||
if (!rmutex || waitMutex(rmutex, false))
|
|
||||||
break;
|
|
||||||
CloseHandle(rmutex);
|
|
||||||
}
|
|
||||||
bool ok = true;
|
|
||||||
if (idx >= MAX_READERS) {
|
|
||||||
qWarning("QtLockedFile::lock(): too many readers");
|
|
||||||
rmutex = 0;
|
|
||||||
ok = false;
|
|
||||||
}
|
|
||||||
else if (!rmutex) {
|
|
||||||
rmutex = getMutexHandle(idx, true);
|
|
||||||
if (!rmutex || !waitMutex(rmutex, false))
|
|
||||||
ok = false;
|
|
||||||
}
|
|
||||||
if (!ok && rmutex) {
|
|
||||||
CloseHandle(rmutex);
|
|
||||||
rmutex = 0;
|
|
||||||
}
|
|
||||||
ReleaseMutex(wmutex);
|
|
||||||
if (!ok)
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
Q_ASSERT(rmutexes.isEmpty());
|
|
||||||
for (int i = 0; i < MAX_READERS; i++) {
|
|
||||||
Qt::HANDLE mutex = getMutexHandle(i, false);
|
|
||||||
if (mutex)
|
|
||||||
rmutexes.append(mutex);
|
|
||||||
}
|
|
||||||
if (rmutexes.size()) {
|
|
||||||
DWORD res = WaitForMultipleObjects(rmutexes.size(), rmutexes.constData(), TRUE, block ? INFINITE : 0);
|
|
||||||
if (res != WAIT_OBJECT_0 && res != WAIT_ABANDONED) {
|
|
||||||
if (res != WAIT_TIMEOUT)
|
|
||||||
qErrnoWarning("QtLockedFile::lock(): WaitForMultipleObjects failed");
|
|
||||||
m_lock_mode = WriteLock; // trick unlock() to clean up - semiyucky
|
|
||||||
unlock();
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
m_lock_mode = mode;
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
|
|
||||||
bool QtLockedFile::unlock()
|
|
||||||
{
|
|
||||||
if (!isOpen()) {
|
|
||||||
qWarning("QtLockedFile::unlock(): file is not opened");
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!isLocked())
|
|
||||||
return true;
|
|
||||||
|
|
||||||
if (m_lock_mode == ReadLock) {
|
|
||||||
ReleaseMutex(rmutex);
|
|
||||||
CloseHandle(rmutex);
|
|
||||||
rmutex = 0;
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
foreach(Qt::HANDLE mutex, rmutexes) {
|
|
||||||
ReleaseMutex(mutex);
|
|
||||||
CloseHandle(mutex);
|
|
||||||
}
|
|
||||||
rmutexes.clear();
|
|
||||||
ReleaseMutex(wmutex);
|
|
||||||
}
|
|
||||||
|
|
||||||
m_lock_mode = QtLockedFile::NoLock;
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
|
|
||||||
QtLockedFile::~QtLockedFile()
|
|
||||||
{
|
|
||||||
if (isOpen())
|
|
||||||
unlock();
|
|
||||||
if (wmutex)
|
|
||||||
CloseHandle(wmutex);
|
|
||||||
}
|
|
|
@ -1,295 +0,0 @@
|
||||||
/****************************************************************************
|
|
||||||
**
|
|
||||||
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
|
|
||||||
** All rights reserved.
|
|
||||||
**
|
|
||||||
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
||||||
**
|
|
||||||
** This file is part of a Qt Solutions component.
|
|
||||||
**
|
|
||||||
** You may use this file under the terms of the BSD license as follows:
|
|
||||||
**
|
|
||||||
** "Redistribution and use in source and binary forms, with or without
|
|
||||||
** modification, are permitted provided that the following conditions are
|
|
||||||
** met:
|
|
||||||
** * Redistributions of source code must retain the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer.
|
|
||||||
** * Redistributions in binary form must reproduce the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer in
|
|
||||||
** the documentation and/or other materials provided with the
|
|
||||||
** distribution.
|
|
||||||
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
|
|
||||||
** the names of its contributors may be used to endorse or promote
|
|
||||||
** products derived from this software without specific prior written
|
|
||||||
** permission.
|
|
||||||
**
|
|
||||||
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
||||||
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
||||||
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
||||||
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
||||||
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
||||||
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
||||||
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
||||||
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
||||||
**
|
|
||||||
****************************************************************************/
|
|
||||||
|
|
||||||
#include "config.h"
|
|
||||||
|
|
||||||
#include "qtsingleapplication.h"
|
|
||||||
|
|
||||||
#include <QApplication>
|
|
||||||
#include <QWidget>
|
|
||||||
#include <QString>
|
|
||||||
|
|
||||||
#include "qtlocalpeer.h"
|
|
||||||
|
|
||||||
/*!
|
|
||||||
\class QtSingleApplication qtsingleapplication.h
|
|
||||||
\brief The QtSingleApplication class provides an API to detect and
|
|
||||||
communicate with running instances of an application.
|
|
||||||
|
|
||||||
This class allows you to create applications where only one
|
|
||||||
instance should be running at a time. I.e., if the user tries to
|
|
||||||
launch another instance, the already running instance will be
|
|
||||||
activated instead. Another usecase is a client-server system,
|
|
||||||
where the first started instance will assume the role of server,
|
|
||||||
and the later instances will act as clients of that server.
|
|
||||||
|
|
||||||
By default, the full path of the executable file is used to
|
|
||||||
determine whether two processes are instances of the same
|
|
||||||
application. You can also provide an explicit identifier string
|
|
||||||
that will be compared instead.
|
|
||||||
|
|
||||||
The application should create the QtSingleApplication object early
|
|
||||||
in the startup phase, and call isRunning() to find out if another
|
|
||||||
instance of this application is already running. If isRunning()
|
|
||||||
returns false, it means that no other instance is running, and
|
|
||||||
this instance has assumed the role as the running instance. In
|
|
||||||
this case, the application should continue with the initialization
|
|
||||||
of the application user interface before entering the event loop
|
|
||||||
with exec(), as normal.
|
|
||||||
|
|
||||||
The messageReceived() signal will be emitted when the running
|
|
||||||
application receives messages from another instance of the same
|
|
||||||
application. When a message is received it might be helpful to the
|
|
||||||
user to raise the application so that it becomes visible. To
|
|
||||||
facilitate this, QtSingleApplication provides the
|
|
||||||
setActivationWindow() function and the activateWindow() slot.
|
|
||||||
|
|
||||||
If isRunning() returns true, another instance is already
|
|
||||||
running. It may be alerted to the fact that another instance has
|
|
||||||
started by using the sendMessage() function. Also data such as
|
|
||||||
startup parameters (e.g. the name of the file the user wanted this
|
|
||||||
new instance to open) can be passed to the running instance with
|
|
||||||
this function. Then, the application should terminate (or enter
|
|
||||||
client mode).
|
|
||||||
|
|
||||||
If isRunning() returns true, but sendMessage() fails, that is an
|
|
||||||
indication that the running instance is frozen.
|
|
||||||
|
|
||||||
Here's an example that shows how to convert an existing
|
|
||||||
application to use QtSingleApplication. It is very simple and does
|
|
||||||
not make use of all QtSingleApplication's functionality (see the
|
|
||||||
examples for that).
|
|
||||||
|
|
||||||
\code
|
|
||||||
// Original
|
|
||||||
int main(int argc, char **argv)
|
|
||||||
{
|
|
||||||
QApplication app(argc, argv);
|
|
||||||
|
|
||||||
MyMainWidget mmw;
|
|
||||||
mmw.show();
|
|
||||||
return app.exec();
|
|
||||||
}
|
|
||||||
|
|
||||||
// Single instance
|
|
||||||
int main(int argc, char **argv)
|
|
||||||
{
|
|
||||||
QtSingleApplication app(argc, argv);
|
|
||||||
|
|
||||||
if (app.isRunning())
|
|
||||||
return !app.sendMessage(someDataString);
|
|
||||||
|
|
||||||
MyMainWidget mmw;
|
|
||||||
app.setActivationWindow(&mmw);
|
|
||||||
mmw.show();
|
|
||||||
return app.exec();
|
|
||||||
}
|
|
||||||
\endcode
|
|
||||||
|
|
||||||
Once this QtSingleApplication instance is destroyed (normally when
|
|
||||||
the process exits or crashes), when the user next attempts to run the
|
|
||||||
application this instance will not, of course, be encountered. The
|
|
||||||
next instance to call isRunning() or sendMessage() will assume the
|
|
||||||
role as the new running instance.
|
|
||||||
|
|
||||||
For console (non-GUI) applications, QtSingleCoreApplication may be
|
|
||||||
used instead of this class, to avoid the dependency on the QtGui
|
|
||||||
library.
|
|
||||||
|
|
||||||
\sa QtSingleCoreApplication
|
|
||||||
*/
|
|
||||||
|
|
||||||
|
|
||||||
void QtSingleApplication::sysInit(const QString &appId)
|
|
||||||
{
|
|
||||||
actWin = 0;
|
|
||||||
peer = new QtLocalPeer(this, appId);
|
|
||||||
connect(peer, SIGNAL(messageReceived(const QString&)), SIGNAL(messageReceived(const QString&)));
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Creates a QtSingleApplication object. The application identifier
|
|
||||||
will be QCoreApplication::applicationFilePath(). \a argc, \a
|
|
||||||
argv, and \a GUIenabled are passed on to the QAppliation constructor.
|
|
||||||
|
|
||||||
If you are creating a console application (i.e. setting \a
|
|
||||||
GUIenabled to false), you may consider using
|
|
||||||
QtSingleCoreApplication instead.
|
|
||||||
*/
|
|
||||||
|
|
||||||
QtSingleApplication::QtSingleApplication(int &argc, char **argv, bool GUIenabled)
|
|
||||||
: QApplication(argc, argv, GUIenabled)
|
|
||||||
{
|
|
||||||
sysInit();
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Creates a QtSingleApplication object with the application
|
|
||||||
identifier \a appId. \a argc and \a argv are passed on to the
|
|
||||||
QAppliation constructor.
|
|
||||||
*/
|
|
||||||
|
|
||||||
QtSingleApplication::QtSingleApplication(const QString &appId, int &argc, char **argv)
|
|
||||||
: QApplication(argc, argv)
|
|
||||||
{
|
|
||||||
sysInit(appId);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Returns true if another instance of this application is running;
|
|
||||||
otherwise false.
|
|
||||||
|
|
||||||
This function does not find instances of this application that are
|
|
||||||
being run by a different user (on Windows: that are running in
|
|
||||||
another session).
|
|
||||||
|
|
||||||
\sa sendMessage()
|
|
||||||
*/
|
|
||||||
|
|
||||||
bool QtSingleApplication::isRunning()
|
|
||||||
{
|
|
||||||
return peer->isClient();
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Tries to send the text \a message to the currently running
|
|
||||||
instance. The QtSingleApplication object in the running instance
|
|
||||||
will emit the messageReceived() signal when it receives the
|
|
||||||
message.
|
|
||||||
|
|
||||||
This function returns true if the message has been sent to, and
|
|
||||||
processed by, the current instance. If there is no instance
|
|
||||||
currently running, or if the running instance fails to process the
|
|
||||||
message within \a timeout milliseconds, this function return false.
|
|
||||||
|
|
||||||
\sa isRunning(), messageReceived()
|
|
||||||
*/
|
|
||||||
bool QtSingleApplication::sendMessage(const QString &message, int timeout)
|
|
||||||
{
|
|
||||||
return peer->sendMessage(message, timeout);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Returns the application identifier. Two processes with the same
|
|
||||||
identifier will be regarded as instances of the same application.
|
|
||||||
*/
|
|
||||||
QString QtSingleApplication::id() const
|
|
||||||
{
|
|
||||||
return peer->applicationId();
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Sets the activation window of this application to \a aw. The
|
|
||||||
activation window is the widget that will be activated by
|
|
||||||
activateWindow(). This is typically the application's main window.
|
|
||||||
|
|
||||||
If \a activateOnMessage is true (the default), the window will be
|
|
||||||
activated automatically every time a message is received, just prior
|
|
||||||
to the messageReceived() signal being emitted.
|
|
||||||
|
|
||||||
\sa activateWindow(), messageReceived()
|
|
||||||
*/
|
|
||||||
|
|
||||||
void QtSingleApplication::setActivationWindow(QWidget* aw, bool activateOnMessage)
|
|
||||||
{
|
|
||||||
actWin = aw;
|
|
||||||
if (activateOnMessage)
|
|
||||||
connect(peer, SIGNAL(messageReceived(const QString&)), this, SLOT(activateWindow()));
|
|
||||||
else
|
|
||||||
disconnect(peer, SIGNAL(messageReceived(const QString&)), this, SLOT(activateWindow()));
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Returns the applications activation window if one has been set by
|
|
||||||
calling setActivationWindow(), otherwise returns 0.
|
|
||||||
|
|
||||||
\sa setActivationWindow()
|
|
||||||
*/
|
|
||||||
QWidget* QtSingleApplication::activationWindow() const
|
|
||||||
{
|
|
||||||
return actWin;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
De-minimizes, raises, and activates this application's activation window.
|
|
||||||
This function does nothing if no activation window has been set.
|
|
||||||
|
|
||||||
This is a convenience function to show the user that this
|
|
||||||
application instance has been activated when he has tried to start
|
|
||||||
another instance.
|
|
||||||
|
|
||||||
This function should typically be called in response to the
|
|
||||||
messageReceived() signal. By default, that will happen
|
|
||||||
automatically, if an activation window has been set.
|
|
||||||
|
|
||||||
\sa setActivationWindow(), messageReceived(), initialize()
|
|
||||||
*/
|
|
||||||
void QtSingleApplication::activateWindow()
|
|
||||||
{
|
|
||||||
if (actWin) {
|
|
||||||
actWin->setWindowState(actWin->windowState() & ~Qt::WindowMinimized);
|
|
||||||
actWin->raise();
|
|
||||||
actWin->activateWindow();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
\fn void QtSingleApplication::messageReceived(const QString& message)
|
|
||||||
|
|
||||||
This signal is emitted when the current instance receives a \a
|
|
||||||
message from another instance of this application.
|
|
||||||
|
|
||||||
\sa sendMessage(), setActivationWindow(), activateWindow()
|
|
||||||
*/
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
\fn void QtSingleApplication::initialize(bool dummy = true)
|
|
||||||
|
|
||||||
\obsolete
|
|
||||||
*/
|
|
|
@ -1,102 +0,0 @@
|
||||||
/****************************************************************************
|
|
||||||
**
|
|
||||||
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
|
|
||||||
** All rights reserved.
|
|
||||||
**
|
|
||||||
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
||||||
**
|
|
||||||
** This file is part of a Qt Solutions component.
|
|
||||||
**
|
|
||||||
** You may use this file under the terms of the BSD license as follows:
|
|
||||||
**
|
|
||||||
** "Redistribution and use in source and binary forms, with or without
|
|
||||||
** modification, are permitted provided that the following conditions are
|
|
||||||
** met:
|
|
||||||
** * Redistributions of source code must retain the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer.
|
|
||||||
** * Redistributions in binary form must reproduce the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer in
|
|
||||||
** the documentation and/or other materials provided with the
|
|
||||||
** distribution.
|
|
||||||
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
|
|
||||||
** the names of its contributors may be used to endorse or promote
|
|
||||||
** products derived from this software without specific prior written
|
|
||||||
** permission.
|
|
||||||
**
|
|
||||||
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
||||||
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
||||||
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
||||||
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
||||||
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
||||||
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
||||||
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
||||||
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
||||||
**
|
|
||||||
****************************************************************************/
|
|
||||||
|
|
||||||
#ifndef QTSINGLEAPPLICATION_H
|
|
||||||
#define QTSINGLEAPPLICATION_H
|
|
||||||
|
|
||||||
#include "config.h"
|
|
||||||
|
|
||||||
#include <QtGlobal>
|
|
||||||
#include <QObject>
|
|
||||||
#include <QWidget>
|
|
||||||
#include <QApplication>
|
|
||||||
#include <QString>
|
|
||||||
|
|
||||||
class QtLocalPeer;
|
|
||||||
|
|
||||||
#if defined(Q_OS_WIN) || defined(Q_OS_WIN32)
|
|
||||||
# if !defined(QT_QTSINGLEAPPLICATION_EXPORT) && !defined(QT_QTSINGLEAPPLICATION_IMPORT)
|
|
||||||
# define QT_QTSINGLEAPPLICATION_EXPORT
|
|
||||||
# elif defined(QT_QTSINGLEAPPLICATION_IMPORT)
|
|
||||||
# if defined(QT_QTSINGLEAPPLICATION_EXPORT)
|
|
||||||
# undef QT_QTSINGLEAPPLICATION_EXPORT
|
|
||||||
# endif
|
|
||||||
# define QT_QTSINGLEAPPLICATION_EXPORT __declspec(dllimport)
|
|
||||||
# elif defined(QT_QTSINGLEAPPLICATION_EXPORT)
|
|
||||||
# undef QT_QTSINGLEAPPLICATION_EXPORT
|
|
||||||
# define QT_QTSINGLEAPPLICATION_EXPORT __declspec(dllexport)
|
|
||||||
# endif
|
|
||||||
#else
|
|
||||||
# define QT_QTSINGLEAPPLICATION_EXPORT
|
|
||||||
#endif
|
|
||||||
|
|
||||||
class QT_QTSINGLEAPPLICATION_EXPORT QtSingleApplication : public QApplication
|
|
||||||
{
|
|
||||||
Q_OBJECT
|
|
||||||
|
|
||||||
public:
|
|
||||||
QtSingleApplication(int &argc, char **argv, bool GUIenabled = true);
|
|
||||||
QtSingleApplication(const QString &id, int &argc, char **argv);
|
|
||||||
|
|
||||||
bool isRunning();
|
|
||||||
QString id() const;
|
|
||||||
|
|
||||||
void setActivationWindow(QWidget* aw, bool activateOnMessage = true);
|
|
||||||
QWidget* activationWindow() const;
|
|
||||||
|
|
||||||
// Obsolete:
|
|
||||||
void initialize(bool dummy = true)
|
|
||||||
{ isRunning(); Q_UNUSED(dummy) }
|
|
||||||
|
|
||||||
public Q_SLOTS:
|
|
||||||
bool sendMessage(const QString &message, int timeout = 5000);
|
|
||||||
void activateWindow();
|
|
||||||
|
|
||||||
|
|
||||||
Q_SIGNALS:
|
|
||||||
void messageReceived(const QString &message);
|
|
||||||
|
|
||||||
|
|
||||||
private:
|
|
||||||
void sysInit(const QString &appId = QString());
|
|
||||||
QtLocalPeer *peer;
|
|
||||||
QWidget *actWin;
|
|
||||||
};
|
|
||||||
|
|
||||||
#endif // QTSINGLEAPPLICATION_H
|
|
|
@ -1,146 +0,0 @@
|
||||||
/****************************************************************************
|
|
||||||
**
|
|
||||||
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
|
|
||||||
** All rights reserved.
|
|
||||||
**
|
|
||||||
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
||||||
**
|
|
||||||
** This file is part of a Qt Solutions component.
|
|
||||||
**
|
|
||||||
** You may use this file under the terms of the BSD license as follows:
|
|
||||||
**
|
|
||||||
** "Redistribution and use in source and binary forms, with or without
|
|
||||||
** modification, are permitted provided that the following conditions are
|
|
||||||
** met:
|
|
||||||
** * Redistributions of source code must retain the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer.
|
|
||||||
** * Redistributions in binary form must reproduce the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer in
|
|
||||||
** the documentation and/or other materials provided with the
|
|
||||||
** distribution.
|
|
||||||
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
|
|
||||||
** the names of its contributors may be used to endorse or promote
|
|
||||||
** products derived from this software without specific prior written
|
|
||||||
** permission.
|
|
||||||
**
|
|
||||||
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
||||||
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
||||||
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
||||||
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
||||||
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
||||||
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
||||||
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
||||||
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
||||||
**
|
|
||||||
****************************************************************************/
|
|
||||||
|
|
||||||
#include <QCoreApplication>
|
|
||||||
#include <QString>
|
|
||||||
#include <QFlags>
|
|
||||||
|
|
||||||
#include "qtsinglecoreapplication.h"
|
|
||||||
#include "qtlocalpeer.h"
|
|
||||||
|
|
||||||
/*!
|
|
||||||
\class QtSingleCoreApplication qtsinglecoreapplication.h
|
|
||||||
\brief A variant of the QtSingleApplication class for non-GUI applications.
|
|
||||||
|
|
||||||
This class is a variant of QtSingleApplication suited for use in
|
|
||||||
console (non-GUI) applications. It is an extension of
|
|
||||||
QCoreApplication (instead of QApplication). It does not require
|
|
||||||
the QtGui library.
|
|
||||||
|
|
||||||
The API and usage is identical to QtSingleApplication, except that
|
|
||||||
functions relating to the "activation window" are not present, for
|
|
||||||
obvious reasons. Please refer to the QtSingleApplication
|
|
||||||
documentation for explanation of the usage.
|
|
||||||
|
|
||||||
A QtSingleCoreApplication instance can communicate to a
|
|
||||||
QtSingleApplication instance if they share the same application
|
|
||||||
id. Hence, this class can be used to create a light-weight
|
|
||||||
command-line tool that sends commands to a GUI application.
|
|
||||||
|
|
||||||
\sa QtSingleApplication
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Creates a QtSingleCoreApplication object. The application identifier
|
|
||||||
will be QCoreApplication::applicationFilePath(). \a argc and \a
|
|
||||||
argv are passed on to the QCoreAppliation constructor.
|
|
||||||
*/
|
|
||||||
|
|
||||||
QtSingleCoreApplication::QtSingleCoreApplication(int &argc, char **argv)
|
|
||||||
: QCoreApplication(argc, argv) {
|
|
||||||
peer = new QtLocalPeer(this);
|
|
||||||
connect(peer, SIGNAL(messageReceived(const QString&)), SIGNAL(messageReceived(const QString&)));
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Creates a QtSingleCoreApplication object with the application
|
|
||||||
identifier \a appId. \a argc and \a argv are passed on to the
|
|
||||||
QCoreAppliation constructor.
|
|
||||||
*/
|
|
||||||
QtSingleCoreApplication::QtSingleCoreApplication(const QString &appId, int &argc, char **argv)
|
|
||||||
: QCoreApplication(argc, argv) {
|
|
||||||
peer = new QtLocalPeer(this, appId);
|
|
||||||
connect(peer, SIGNAL(messageReceived(const QString&)), SIGNAL(messageReceived(const QString&)));
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Returns true if another instance of this application is running;
|
|
||||||
otherwise false.
|
|
||||||
|
|
||||||
This function does not find instances of this application that are
|
|
||||||
being run by a different user (on Windows: that are running in
|
|
||||||
another session).
|
|
||||||
|
|
||||||
\sa sendMessage()
|
|
||||||
*/
|
|
||||||
|
|
||||||
bool QtSingleCoreApplication::isRunning() {
|
|
||||||
return peer->isClient();
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Tries to send the text \a message to the currently running
|
|
||||||
instance. The QtSingleCoreApplication object in the running instance
|
|
||||||
will emit the messageReceived() signal when it receives the
|
|
||||||
message.
|
|
||||||
|
|
||||||
This function returns true if the message has been sent to, and
|
|
||||||
processed by, the current instance. If there is no instance
|
|
||||||
currently running, or if the running instance fails to process the
|
|
||||||
message within \a timeout milliseconds, this function return false.
|
|
||||||
|
|
||||||
\sa isRunning(), messageReceived()
|
|
||||||
*/
|
|
||||||
|
|
||||||
bool QtSingleCoreApplication::sendMessage(const QString &message, int timeout) {
|
|
||||||
return peer->sendMessage(message, timeout);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
Returns the application identifier. Two processes with the same
|
|
||||||
identifier will be regarded as instances of the same application.
|
|
||||||
*/
|
|
||||||
|
|
||||||
QString QtSingleCoreApplication::id() const {
|
|
||||||
return peer->applicationId();
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*!
|
|
||||||
\fn void QtSingleCoreApplication::messageReceived(const QString& message)
|
|
||||||
|
|
||||||
This signal is emitted when the current instance receives a \a
|
|
||||||
message from another instance of this application.
|
|
||||||
|
|
||||||
\sa sendMessage()
|
|
||||||
*/
|
|
|
@ -1,74 +0,0 @@
|
||||||
/****************************************************************************
|
|
||||||
**
|
|
||||||
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
|
|
||||||
** All rights reserved.
|
|
||||||
**
|
|
||||||
** Contact: Nokia Corporation (qt-info@nokia.com)
|
|
||||||
**
|
|
||||||
** This file is part of a Qt Solutions component.
|
|
||||||
**
|
|
||||||
** You may use this file under the terms of the BSD license as follows:
|
|
||||||
**
|
|
||||||
** "Redistribution and use in source and binary forms, with or without
|
|
||||||
** modification, are permitted provided that the following conditions are
|
|
||||||
** met:
|
|
||||||
** * Redistributions of source code must retain the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer.
|
|
||||||
** * Redistributions in binary form must reproduce the above copyright
|
|
||||||
** notice, this list of conditions and the following disclaimer in
|
|
||||||
** the documentation and/or other materials provided with the
|
|
||||||
** distribution.
|
|
||||||
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
|
|
||||||
** the names of its contributors may be used to endorse or promote
|
|
||||||
** products derived from this software without specific prior written
|
|
||||||
** permission.
|
|
||||||
**
|
|
||||||
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
||||||
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
||||||
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
||||||
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
||||||
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
||||||
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
||||||
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
||||||
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
||||||
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
||||||
**
|
|
||||||
****************************************************************************/
|
|
||||||
|
|
||||||
#ifndef QTSINGLECOREAPPLICATION_H
|
|
||||||
#define QTSINGLECOREAPPLICATION_H
|
|
||||||
|
|
||||||
#include "config.h"
|
|
||||||
|
|
||||||
#include <QCoreApplication>
|
|
||||||
#include <QObject>
|
|
||||||
#include <QString>
|
|
||||||
|
|
||||||
class QtLocalPeer;
|
|
||||||
|
|
||||||
class QtSingleCoreApplication : public QCoreApplication
|
|
||||||
{
|
|
||||||
Q_OBJECT
|
|
||||||
|
|
||||||
public:
|
|
||||||
QtSingleCoreApplication(int &argc, char **argv);
|
|
||||||
QtSingleCoreApplication(const QString &id, int &argc, char **argv);
|
|
||||||
|
|
||||||
bool isRunning();
|
|
||||||
QString id() const;
|
|
||||||
|
|
||||||
public Q_SLOTS:
|
|
||||||
bool sendMessage(const QString &message, int timeout = 5000);
|
|
||||||
|
|
||||||
|
|
||||||
Q_SIGNALS:
|
|
||||||
void messageReceived(const QString &message);
|
|
||||||
|
|
||||||
|
|
||||||
private:
|
|
||||||
QtLocalPeer* peer;
|
|
||||||
};
|
|
||||||
|
|
||||||
#endif // QTSINGLECOREAPPLICATION_H
|
|
|
@ -0,0 +1,13 @@
|
||||||
|
cmake_minimum_required(VERSION 2.8.11)
|
||||||
|
set(CMAKE_CXX_STANDARD 11)
|
||||||
|
if(${CMAKE_VERSION} GREATER_EQUAL 3.12)
|
||||||
|
add_compile_definitions(QAPPLICATION_CLASS=QApplication)
|
||||||
|
else()
|
||||||
|
add_definitions(-DQAPPLICATION_CLASS=QApplication)
|
||||||
|
endif()
|
||||||
|
set(SINGLEAPP-SOURCES singleapplication.cpp singleapplication_p.cpp)
|
||||||
|
set(SINGLEAPP-MOC-HEADERS singleapplication.h singleapplication_p.h)
|
||||||
|
QT5_WRAP_CPP(SINGLEAPP-SOURCES-MOC ${SINGLEAPP-MOC-HEADERS})
|
||||||
|
ADD_LIBRARY(singleapplication STATIC ${SINGLEAPP-SOURCES} ${SINGLEAPP-SOURCES-MOC})
|
||||||
|
target_link_libraries(singleapplication Qt5::Core Qt5::Widgets Qt5::Network)
|
||||||
|
include_directories(${CMAKE_BINARY_DIR}/src)
|
|
@ -0,0 +1,24 @@
|
||||||
|
The MIT License (MIT)
|
||||||
|
|
||||||
|
Copyright (c) Itay Grudev 2015 - 2016
|
||||||
|
|
||||||
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
of this software and associated documentation files (the "Software"), to deal
|
||||||
|
in the Software without restriction, including without limitation the rights
|
||||||
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
copies of the Software, and to permit persons to whom the Software is
|
||||||
|
furnished to do so, subject to the following conditions:
|
||||||
|
|
||||||
|
The above copyright notice and this permission notice shall be included in
|
||||||
|
all copies or substantial portions of the Software.
|
||||||
|
|
||||||
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
THE SOFTWARE.
|
||||||
|
|
||||||
|
Note: Some of the examples include code not distributed under the terms of the
|
||||||
|
MIT License.
|
|
@ -0,0 +1,265 @@
|
||||||
|
SingleApplication
|
||||||
|
=================
|
||||||
|
|
||||||
|
This is a replacement of the QtSingleApplication for `Qt5`.
|
||||||
|
|
||||||
|
Keeps the Primary Instance of your Application and kills each subsequent
|
||||||
|
instances. It can (if enabled) spawn secondary (non-related to the primary)
|
||||||
|
instances and can send data to the primary instance from secondary instances.
|
||||||
|
|
||||||
|
Usage
|
||||||
|
-----
|
||||||
|
|
||||||
|
The `SingleApplication` class inherits from whatever `Q[Core|Gui]Application`
|
||||||
|
class you specify via the `QAPPLICATION_CLASS` macro (`QCoreApplication` is the
|
||||||
|
default). Further usage is similar to the use of the `Q[Core|Gui]Application`
|
||||||
|
classes.
|
||||||
|
|
||||||
|
The library sets up a `QLocalServer` and a `QSharedMemory` block. The first
|
||||||
|
instance of your Application is your Primary Instance. It would check if the
|
||||||
|
shared memory block exists and if not it will start a `QLocalServer` and listen
|
||||||
|
for connections. Each subsequent instance of your application would check if the
|
||||||
|
shared memory block exists and if it does, it will connect to the QLocalServer
|
||||||
|
to notify the primary instance that a new instance had been started, after which
|
||||||
|
it would terminate with status code `0`. In the Primary Instance
|
||||||
|
`SingleApplication` would emit the `instanceStarted()` signal upon detecting
|
||||||
|
that a new instance had been started.
|
||||||
|
|
||||||
|
The library uses `stdlib` to terminate the program with the `exit()` function.
|
||||||
|
|
||||||
|
You can use the library as if you use any other `QCoreApplication` derived
|
||||||
|
class:
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
#include <QApplication>
|
||||||
|
#include <SingleApplication.h>
|
||||||
|
|
||||||
|
int main( int argc, char* argv[] )
|
||||||
|
{
|
||||||
|
SingleApplication app( argc, argv );
|
||||||
|
|
||||||
|
return app.exec();
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
To include the library files I would recommend that you add it as a git
|
||||||
|
submodule to your project and include it's contents with a `.pri` file. Here is
|
||||||
|
how:
|
||||||
|
|
||||||
|
```bash
|
||||||
|
git submodule add git@github.com:itay-grudev/SingleApplication.git singleapplication
|
||||||
|
```
|
||||||
|
|
||||||
|
Then include the `singleapplication.pri` file in your `.pro` project file. Also
|
||||||
|
don't forget to specify which `QCoreApplication` class your app is using if it
|
||||||
|
is not `QCoreApplication`.
|
||||||
|
|
||||||
|
```qmake
|
||||||
|
include(singleapplication/singleapplication.pri)
|
||||||
|
DEFINES += QAPPLICATION_CLASS=QApplication
|
||||||
|
```
|
||||||
|
|
||||||
|
The `Instance Started` signal
|
||||||
|
------------------------
|
||||||
|
|
||||||
|
The SingleApplication class implements a `instanceStarted()` signal. You can
|
||||||
|
bind to that signal to raise your application's window when a new instance had
|
||||||
|
been started, for example.
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
// window is a QWindow instance
|
||||||
|
QObject::connect(
|
||||||
|
&app,
|
||||||
|
&SingleApplication::instanceStarted,
|
||||||
|
&window,
|
||||||
|
&QWindow::raise
|
||||||
|
);
|
||||||
|
```
|
||||||
|
|
||||||
|
Using `SingleApplication::instance()` is a neat way to get the
|
||||||
|
`SingleApplication` instance for binding to it's signals anywhere in your
|
||||||
|
program.
|
||||||
|
|
||||||
|
__Note:__ On Windows the ability to bring the application windows to the
|
||||||
|
foreground is restricted. See [Windows specific implementations](Windows.md)
|
||||||
|
for a workaround and an example implementation.
|
||||||
|
|
||||||
|
|
||||||
|
Secondary Instances
|
||||||
|
-------------------
|
||||||
|
|
||||||
|
If you want to be able to launch additional Secondary Instances (not related to
|
||||||
|
your Primary Instance) you have to enable that with the third parameter of the
|
||||||
|
`SingleApplication` constructor. The default is `false` meaning no Secondary
|
||||||
|
Instances. Here is an example of how you would start a Secondary Instance send
|
||||||
|
a message with the command line arguments to the primary instance and then shut
|
||||||
|
down.
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
int main(int argc, char *argv[])
|
||||||
|
{
|
||||||
|
SingleApplication app( argc, argv, true );
|
||||||
|
|
||||||
|
if( app.isSecondary() ) {
|
||||||
|
app.sendMessage( app.arguments().join(' ')).toUtf8() );
|
||||||
|
app.exit( 0 );
|
||||||
|
}
|
||||||
|
|
||||||
|
return app.exec();
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
*__Note:__ A secondary instance won't cause the emission of the
|
||||||
|
`instanceStarted()` signal by default. See `SingleApplication::Mode` for more
|
||||||
|
details.*
|
||||||
|
|
||||||
|
You can check whether your instance is a primary or secondary with the following
|
||||||
|
methods:
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
app.isPrimary();
|
||||||
|
// or
|
||||||
|
app.isSecondary();
|
||||||
|
```
|
||||||
|
|
||||||
|
*__Note:__ If your Primary Instance is terminated a newly launched instance
|
||||||
|
will replace the Primary one even if the Secondary flag has been set.*
|
||||||
|
|
||||||
|
API
|
||||||
|
---
|
||||||
|
|
||||||
|
### Members
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSecondary = false, Options options = Mode::User, int timeout = 100 )
|
||||||
|
```
|
||||||
|
|
||||||
|
Depending on whether `allowSecondary` is set, this constructor may terminate
|
||||||
|
your app if there is already a primary instance running. Additional `Options`
|
||||||
|
can be specified to set whether the SingleApplication block should work
|
||||||
|
user-wide or system-wide. Additionally the `Mode::SecondaryNotification` may be
|
||||||
|
used to notify the primary instance whenever a secondary instance had been
|
||||||
|
started (disabled by default). `timeout` specifies the maximum time in
|
||||||
|
milliseconds to wait for blocking operations.
|
||||||
|
|
||||||
|
*__Note:__ `argc` and `argv` may be changed as Qt removes arguments that it
|
||||||
|
recognizes.*
|
||||||
|
|
||||||
|
*__Note:__ `Mode::SecondaryNotification` only works if set on both the primary
|
||||||
|
and the secondary instance.*
|
||||||
|
|
||||||
|
*__Note:__ Operating system can restrict the shared memory blocks to the same
|
||||||
|
user, in which case the User/System modes will have no effect and the block will
|
||||||
|
be user wide.*
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
bool SingleApplication::sendMessage( QByteArray message, int timeout = 100 )
|
||||||
|
```
|
||||||
|
|
||||||
|
Sends `message` to the Primary Instance. Uses `timeout` as a the maximum timeout
|
||||||
|
in milliseconds for blocking functions
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
bool SingleApplication::isPrimary()
|
||||||
|
```
|
||||||
|
|
||||||
|
Returns if the instance is the primary instance.
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
bool SingleApplication::isSecondary()
|
||||||
|
```
|
||||||
|
Returns if the instance is a secondary instance.
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
quint32 SingleApplication::instanceId()
|
||||||
|
```
|
||||||
|
|
||||||
|
Returns a unique identifier for the current instance.
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
qint64 SingleApplication::primaryPid()
|
||||||
|
```
|
||||||
|
|
||||||
|
Returns the process ID (PID) of the primary instance.
|
||||||
|
|
||||||
|
### Signals
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
void SingleApplication::instanceStarted()
|
||||||
|
```
|
||||||
|
|
||||||
|
Triggered whenever a new instance had been started, except for secondary
|
||||||
|
instances if the `Mode::SecondaryNotification` flag is not specified.
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
void SingleApplication::receivedMessage( quint32 instanceId, QByteArray message )
|
||||||
|
```
|
||||||
|
|
||||||
|
Triggered whenever there is a message received from a secondary instance.
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
### Flags
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
enum SingleApplication::Mode
|
||||||
|
```
|
||||||
|
|
||||||
|
* `Mode::User` - The SingleApplication block should apply user wide. This adds
|
||||||
|
user specific data to the key used for the shared memory and server name.
|
||||||
|
This is the default functionality.
|
||||||
|
* `Mode::System` – The SingleApplication block applies system-wide.
|
||||||
|
* `Mode::SecondaryNotification` – Whether to trigger `instanceStarted()` even
|
||||||
|
whenever secondary instances are started.
|
||||||
|
* `Mode::ExcludeAppPath` – Excludes the application path from the server name
|
||||||
|
(and memory block) hash.
|
||||||
|
* `Mode::ExcludeAppVersion` – Excludes the application version from the server
|
||||||
|
name (and memory block) hash.
|
||||||
|
|
||||||
|
*__Note:__ `Mode::SecondaryNotification` only works if set on both the primary
|
||||||
|
and the secondary instance.*
|
||||||
|
|
||||||
|
*__Note:__ Operating system can restrict the shared memory blocks to the same
|
||||||
|
user, in which case the User/System modes will have no effect and the block will
|
||||||
|
be user wide.*
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
Versioning
|
||||||
|
----------
|
||||||
|
|
||||||
|
Each major version introduces either very significant changes or is not
|
||||||
|
backwards compatible with the previous version. Minor versions only add
|
||||||
|
additional features, bug fixes or performance improvements and are backwards
|
||||||
|
compatible with the previous release. See [`CHANGELOG.md`](CHANGELOG.md) for
|
||||||
|
more details.
|
||||||
|
|
||||||
|
Implementation
|
||||||
|
--------------
|
||||||
|
|
||||||
|
The library is implemented with a QSharedMemory block which is thread safe and
|
||||||
|
guarantees a race condition will not occur. It also uses a QLocalSocket to
|
||||||
|
notify the main process that a new instance had been spawned and thus invoke the
|
||||||
|
`instanceStarted()` signal and for messaging the primary instance.
|
||||||
|
|
||||||
|
Additionally the library can recover from being forcefully killed on *nix
|
||||||
|
systems and will reset the memory block given that there are no other
|
||||||
|
instances running.
|
||||||
|
|
||||||
|
License
|
||||||
|
-------
|
||||||
|
This library and it's supporting documentation are released under
|
||||||
|
`The MIT License (MIT)` with the exception of the Qt calculator examples which
|
||||||
|
is distributed under the BSD license.
|
|
@ -0,0 +1,174 @@
|
||||||
|
// The MIT License (MIT)
|
||||||
|
//
|
||||||
|
// Copyright (c) Itay Grudev 2015 - 2018
|
||||||
|
//
|
||||||
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
// of this software and associated documentation files (the "Software"), to deal
|
||||||
|
// in the Software without restriction, including without limitation the rights
|
||||||
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
// copies of the Software, and to permit persons to whom the Software is
|
||||||
|
// furnished to do so, subject to the following conditions:
|
||||||
|
//
|
||||||
|
// The above copyright notice and this permission notice shall be included in
|
||||||
|
// all copies or substantial portions of the Software.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
// THE SOFTWARE.
|
||||||
|
|
||||||
|
#include <QtCore/QTime>
|
||||||
|
#include <QtCore/QThread>
|
||||||
|
#include <QtCore/QDateTime>
|
||||||
|
#include <QtCore/QByteArray>
|
||||||
|
#include <QtCore/QSharedMemory>
|
||||||
|
|
||||||
|
#include "singleapplication.h"
|
||||||
|
#include "singleapplication_p.h"
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Constructor. Checks and fires up LocalServer or closes the program
|
||||||
|
* if another instance already exists
|
||||||
|
* @param argc
|
||||||
|
* @param argv
|
||||||
|
* @param {bool} allowSecondaryInstances
|
||||||
|
*/
|
||||||
|
SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSecondary, Options options, int timeout )
|
||||||
|
: app_t( argc, argv ), d_ptr( new SingleApplicationPrivate( this ) )
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
|
||||||
|
// Store the current mode of the program
|
||||||
|
d->options = options;
|
||||||
|
|
||||||
|
// Generating an application ID used for identifying the shared memory
|
||||||
|
// block and QLocalServer
|
||||||
|
d->genBlockServerName();
|
||||||
|
|
||||||
|
#ifdef Q_OS_UNIX
|
||||||
|
// By explicitly attaching it and then deleting it we make sure that the
|
||||||
|
// memory is deleted even after the process has crashed on Unix.
|
||||||
|
d->memory = new QSharedMemory( d->blockServerName );
|
||||||
|
d->memory->attach();
|
||||||
|
delete d->memory;
|
||||||
|
#endif
|
||||||
|
// Guarantee thread safe behaviour with a shared memory block.
|
||||||
|
d->memory = new QSharedMemory( d->blockServerName );
|
||||||
|
|
||||||
|
// Create a shared memory block
|
||||||
|
if( d->memory->create( sizeof( InstancesInfo ) ) ) {
|
||||||
|
// Initialize the shared memory block
|
||||||
|
d->memory->lock();
|
||||||
|
d->initializeMemoryBlock();
|
||||||
|
d->memory->unlock();
|
||||||
|
} else {
|
||||||
|
// Attempt to attach to the memory segment
|
||||||
|
if( ! d->memory->attach() ) {
|
||||||
|
qCritical() << "SingleApplication: Unable to attach to shared memory block.";
|
||||||
|
qCritical() << d->memory->errorString();
|
||||||
|
delete d;
|
||||||
|
::exit( EXIT_FAILURE );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
InstancesInfo* inst = static_cast<InstancesInfo*>( d->memory->data() );
|
||||||
|
QTime time;
|
||||||
|
time.start();
|
||||||
|
|
||||||
|
// Make sure the shared memory block is initialised and in consistent state
|
||||||
|
while( true ) {
|
||||||
|
d->memory->lock();
|
||||||
|
|
||||||
|
if( d->blockChecksum() == inst->checksum ) break;
|
||||||
|
|
||||||
|
if( time.elapsed() > 5000 ) {
|
||||||
|
qWarning() << "SingleApplication: Shared memory block has been in an inconsistent state from more than 5s. Assuming primary instance failure.";
|
||||||
|
d->initializeMemoryBlock();
|
||||||
|
}
|
||||||
|
|
||||||
|
d->memory->unlock();
|
||||||
|
|
||||||
|
// Random sleep here limits the probability of a collision between two racing apps
|
||||||
|
qsrand( QDateTime::currentMSecsSinceEpoch() % std::numeric_limits<uint>::max() );
|
||||||
|
QThread::sleep( 8 + static_cast <unsigned long>( static_cast <float>( qrand() ) / RAND_MAX * 10 ) );
|
||||||
|
}
|
||||||
|
|
||||||
|
if( inst->primary == false) {
|
||||||
|
d->startPrimary();
|
||||||
|
d->memory->unlock();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Check if another instance can be started
|
||||||
|
if( allowSecondary ) {
|
||||||
|
inst->secondary += 1;
|
||||||
|
inst->checksum = d->blockChecksum();
|
||||||
|
d->instanceNumber = inst->secondary;
|
||||||
|
d->startSecondary();
|
||||||
|
if( d->options & Mode::SecondaryNotification ) {
|
||||||
|
d->connectToPrimary( timeout, SingleApplicationPrivate::SecondaryInstance );
|
||||||
|
}
|
||||||
|
d->memory->unlock();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
d->memory->unlock();
|
||||||
|
|
||||||
|
d->connectToPrimary( timeout, SingleApplicationPrivate::NewInstance );
|
||||||
|
|
||||||
|
delete d;
|
||||||
|
|
||||||
|
::exit( EXIT_SUCCESS );
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Destructor
|
||||||
|
*/
|
||||||
|
SingleApplication::~SingleApplication()
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
delete d;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool SingleApplication::isPrimary()
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
return d->server != nullptr;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool SingleApplication::isSecondary()
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
return d->server == nullptr;
|
||||||
|
}
|
||||||
|
|
||||||
|
quint32 SingleApplication::instanceId()
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
return d->instanceNumber;
|
||||||
|
}
|
||||||
|
|
||||||
|
qint64 SingleApplication::primaryPid()
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
return d->primaryPid();
|
||||||
|
}
|
||||||
|
|
||||||
|
bool SingleApplication::sendMessage( QByteArray message, int timeout )
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
|
||||||
|
// Nobody to connect to
|
||||||
|
if( isPrimary() ) return false;
|
||||||
|
|
||||||
|
// Make sure the socket is connected
|
||||||
|
d->connectToPrimary( timeout, SingleApplicationPrivate::Reconnect );
|
||||||
|
|
||||||
|
d->socket->write( message );
|
||||||
|
bool dataWritten = d->socket->flush();
|
||||||
|
d->socket->waitForBytesWritten( timeout );
|
||||||
|
return dataWritten;
|
||||||
|
}
|
|
@ -0,0 +1,135 @@
|
||||||
|
// The MIT License (MIT)
|
||||||
|
//
|
||||||
|
// Copyright (c) Itay Grudev 2015 - 2018
|
||||||
|
//
|
||||||
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
// of this software and associated documentation files (the "Software"), to deal
|
||||||
|
// in the Software without restriction, including without limitation the rights
|
||||||
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
// copies of the Software, and to permit persons to whom the Software is
|
||||||
|
// furnished to do so, subject to the following conditions:
|
||||||
|
//
|
||||||
|
// The above copyright notice and this permission notice shall be included in
|
||||||
|
// all copies or substantial portions of the Software.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
// THE SOFTWARE.
|
||||||
|
|
||||||
|
#ifndef SINGLE_APPLICATION_H
|
||||||
|
#define SINGLE_APPLICATION_H
|
||||||
|
|
||||||
|
#include <QtCore/QtGlobal>
|
||||||
|
#include <QtNetwork/QLocalSocket>
|
||||||
|
|
||||||
|
#ifndef QAPPLICATION_CLASS
|
||||||
|
#error "QAPPLICATION_CLASS not defined."
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include QT_STRINGIFY(QAPPLICATION_CLASS)
|
||||||
|
|
||||||
|
class SingleApplicationPrivate;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief The SingleApplication class handles multipe instances of the same
|
||||||
|
* Application
|
||||||
|
* @see QCoreApplication
|
||||||
|
*/
|
||||||
|
class SingleApplication : public QAPPLICATION_CLASS
|
||||||
|
{
|
||||||
|
Q_OBJECT
|
||||||
|
|
||||||
|
typedef QAPPLICATION_CLASS app_t;
|
||||||
|
|
||||||
|
public:
|
||||||
|
/**
|
||||||
|
* @brief Mode of operation of SingleApplication.
|
||||||
|
* Whether the block should be user-wide or system-wide and whether the
|
||||||
|
* primary instance should be notified when a secondary instance had been
|
||||||
|
* started.
|
||||||
|
* @note Operating system can restrict the shared memory blocks to the same
|
||||||
|
* user, in which case the User/System modes will have no effect and the
|
||||||
|
* block will be user wide.
|
||||||
|
* @enum
|
||||||
|
*/
|
||||||
|
enum Mode {
|
||||||
|
User = 1 << 0,
|
||||||
|
System = 1 << 1,
|
||||||
|
SecondaryNotification = 1 << 2,
|
||||||
|
ExcludeAppVersion = 1 << 3,
|
||||||
|
ExcludeAppPath = 1 << 4
|
||||||
|
};
|
||||||
|
Q_DECLARE_FLAGS(Options, Mode)
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Intitializes a SingleApplication instance with argc command line
|
||||||
|
* arguments in argv
|
||||||
|
* @arg {int &} argc - Number of arguments in argv
|
||||||
|
* @arg {const char *[]} argv - Supplied command line arguments
|
||||||
|
* @arg {bool} allowSecondary - Whether to start the instance as secondary
|
||||||
|
* if there is already a primary instance.
|
||||||
|
* @arg {Mode} mode - Whether for the SingleApplication block to be applied
|
||||||
|
* User wide or System wide.
|
||||||
|
* @arg {int} timeout - Timeout to wait in miliseconds.
|
||||||
|
* @note argc and argv may be changed as Qt removes arguments that it
|
||||||
|
* recognizes
|
||||||
|
* @note Mode::SecondaryNotification only works if set on both the primary
|
||||||
|
* instance and the secondary instance.
|
||||||
|
* @note The timeout is just a hint for the maximum time of blocking
|
||||||
|
* operations. It does not guarantee that the SingleApplication
|
||||||
|
* initialisation will be completed in given time, though is a good hint.
|
||||||
|
* Usually 4*timeout would be the worst case (fail) scenario.
|
||||||
|
* @see See the corresponding QAPPLICATION_CLASS constructor for reference
|
||||||
|
*/
|
||||||
|
explicit SingleApplication( int &argc, char *argv[], bool allowSecondary = false, Options options = Mode::User, int timeout = 1000 );
|
||||||
|
~SingleApplication();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns if the instance is the primary instance
|
||||||
|
* @returns {bool}
|
||||||
|
*/
|
||||||
|
bool isPrimary();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns if the instance is a secondary instance
|
||||||
|
* @returns {bool}
|
||||||
|
*/
|
||||||
|
bool isSecondary();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns a unique identifier for the current instance
|
||||||
|
* @returns {qint32}
|
||||||
|
*/
|
||||||
|
quint32 instanceId();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns the process ID (PID) of the primary instance
|
||||||
|
* @returns {qint64}
|
||||||
|
*/
|
||||||
|
qint64 primaryPid();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Sends a message to the primary instance. Returns true on success.
|
||||||
|
* @param {int} timeout - Timeout for connecting
|
||||||
|
* @returns {bool}
|
||||||
|
* @note sendMessage() will return false if invoked from the primary
|
||||||
|
* instance.
|
||||||
|
*/
|
||||||
|
bool sendMessage( QByteArray message, int timeout = 100 );
|
||||||
|
|
||||||
|
Q_SIGNALS:
|
||||||
|
void instanceStarted();
|
||||||
|
void receivedMessage( quint32 instanceId, QByteArray message );
|
||||||
|
|
||||||
|
private:
|
||||||
|
SingleApplicationPrivate *d_ptr;
|
||||||
|
Q_DECLARE_PRIVATE(SingleApplication)
|
||||||
|
};
|
||||||
|
|
||||||
|
Q_DECLARE_OPERATORS_FOR_FLAGS(SingleApplication::Options)
|
||||||
|
|
||||||
|
#endif // SINGLE_APPLICATION_H
|
|
@ -0,0 +1,402 @@
|
||||||
|
// The MIT License (MIT)
|
||||||
|
//
|
||||||
|
// Copyright (c) Itay Grudev 2015 - 2018
|
||||||
|
//
|
||||||
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
// of this software and associated documentation files (the "Software"), to deal
|
||||||
|
// in the Software without restriction, including without limitation the rights
|
||||||
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
// copies of the Software, and to permit persons to whom the Software is
|
||||||
|
// furnished to do so, subject to the following conditions:
|
||||||
|
//
|
||||||
|
// The above copyright notice and this permission notice shall be included in
|
||||||
|
// all copies or substantial portions of the Software.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
// THE SOFTWARE.
|
||||||
|
|
||||||
|
//
|
||||||
|
// W A R N I N G !!!
|
||||||
|
// -----------------
|
||||||
|
//
|
||||||
|
// This file is not part of the SingleApplication API. It is used purely as an
|
||||||
|
// implementation detail. This header file may change from version to
|
||||||
|
// version without notice, or may even be removed.
|
||||||
|
//
|
||||||
|
|
||||||
|
#include <cstdlib>
|
||||||
|
#include <cstddef>
|
||||||
|
|
||||||
|
#include <QtCore/QDir>
|
||||||
|
#include <QtCore/QProcess>
|
||||||
|
#include <QtCore/QByteArray>
|
||||||
|
#include <QtCore/QSemaphore>
|
||||||
|
#include <QtCore/QDataStream>
|
||||||
|
#include <QtCore/QStandardPaths>
|
||||||
|
#include <QtCore/QCryptographicHash>
|
||||||
|
#include <QtNetwork/QLocalServer>
|
||||||
|
#include <QtNetwork/QLocalSocket>
|
||||||
|
|
||||||
|
#include "singleapplication.h"
|
||||||
|
#include "singleapplication_p.h"
|
||||||
|
|
||||||
|
#ifdef Q_OS_WIN
|
||||||
|
#include <windows.h>
|
||||||
|
#include <lmcons.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
SingleApplicationPrivate::SingleApplicationPrivate( SingleApplication *q_ptr )
|
||||||
|
: q_ptr( q_ptr )
|
||||||
|
{
|
||||||
|
server = nullptr;
|
||||||
|
socket = nullptr;
|
||||||
|
}
|
||||||
|
|
||||||
|
SingleApplicationPrivate::~SingleApplicationPrivate()
|
||||||
|
{
|
||||||
|
if( socket != nullptr ) {
|
||||||
|
socket->close();
|
||||||
|
delete socket;
|
||||||
|
}
|
||||||
|
|
||||||
|
memory->lock();
|
||||||
|
InstancesInfo* inst = static_cast<InstancesInfo*>(memory->data());
|
||||||
|
if( server != nullptr ) {
|
||||||
|
server->close();
|
||||||
|
delete server;
|
||||||
|
inst->primary = false;
|
||||||
|
inst->primaryPid = -1;
|
||||||
|
inst->checksum = blockChecksum();
|
||||||
|
}
|
||||||
|
memory->unlock();
|
||||||
|
|
||||||
|
delete memory;
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::genBlockServerName()
|
||||||
|
{
|
||||||
|
QCryptographicHash appData( QCryptographicHash::Sha256 );
|
||||||
|
appData.addData( "SingleApplication", 17 );
|
||||||
|
appData.addData( SingleApplication::app_t::applicationName().toUtf8() );
|
||||||
|
appData.addData( SingleApplication::app_t::organizationName().toUtf8() );
|
||||||
|
appData.addData( SingleApplication::app_t::organizationDomain().toUtf8() );
|
||||||
|
|
||||||
|
if( ! (options & SingleApplication::Mode::ExcludeAppVersion) ) {
|
||||||
|
appData.addData( SingleApplication::app_t::applicationVersion().toUtf8() );
|
||||||
|
}
|
||||||
|
|
||||||
|
if( ! (options & SingleApplication::Mode::ExcludeAppPath) ) {
|
||||||
|
#ifdef Q_OS_WIN
|
||||||
|
appData.addData( SingleApplication::app_t::applicationFilePath().toLower().toUtf8() );
|
||||||
|
#else
|
||||||
|
appData.addData( SingleApplication::app_t::applicationFilePath().toUtf8() );
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
// User level block requires a user specific data in the hash
|
||||||
|
if( options & SingleApplication::Mode::User ) {
|
||||||
|
#ifdef Q_OS_WIN
|
||||||
|
wchar_t username [ UNLEN + 1 ];
|
||||||
|
// Specifies size of the buffer on input
|
||||||
|
DWORD usernameLength = UNLEN + 1;
|
||||||
|
if( GetUserNameW( username, &usernameLength ) ) {
|
||||||
|
appData.addData( QString::fromWCharArray(username).toUtf8() );
|
||||||
|
} else {
|
||||||
|
appData.addData( QStandardPaths::standardLocations( QStandardPaths::HomeLocation ).join("").toUtf8() );
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
#ifdef Q_OS_UNIX
|
||||||
|
QProcess process;
|
||||||
|
process.start( "whoami" );
|
||||||
|
if( process.waitForFinished( 100 ) &&
|
||||||
|
process.exitCode() == QProcess::NormalExit) {
|
||||||
|
appData.addData( process.readLine() );
|
||||||
|
} else {
|
||||||
|
appData.addData(
|
||||||
|
QDir(
|
||||||
|
QStandardPaths::standardLocations( QStandardPaths::HomeLocation ).first()
|
||||||
|
).absolutePath().toUtf8()
|
||||||
|
);
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
// Replace the backslash in RFC 2045 Base64 [a-zA-Z0-9+/=] to comply with
|
||||||
|
// server naming requirements.
|
||||||
|
blockServerName = appData.result().toBase64().replace("/", "_");
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::initializeMemoryBlock()
|
||||||
|
{
|
||||||
|
InstancesInfo* inst = static_cast<InstancesInfo*>( memory->data() );
|
||||||
|
inst->primary = false;
|
||||||
|
inst->secondary = 0;
|
||||||
|
inst->primaryPid = -1;
|
||||||
|
inst->checksum = blockChecksum();
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::startPrimary()
|
||||||
|
{
|
||||||
|
Q_Q(SingleApplication);
|
||||||
|
|
||||||
|
// Successful creation means that no main process exists
|
||||||
|
// So we start a QLocalServer to listen for connections
|
||||||
|
QLocalServer::removeServer( blockServerName );
|
||||||
|
server = new QLocalServer();
|
||||||
|
|
||||||
|
// Restrict access to the socket according to the
|
||||||
|
// SingleApplication::Mode::User flag on User level or no restrictions
|
||||||
|
if( options & SingleApplication::Mode::User ) {
|
||||||
|
server->setSocketOptions( QLocalServer::UserAccessOption );
|
||||||
|
} else {
|
||||||
|
server->setSocketOptions( QLocalServer::WorldAccessOption );
|
||||||
|
}
|
||||||
|
|
||||||
|
server->listen( blockServerName );
|
||||||
|
QObject::connect(
|
||||||
|
server,
|
||||||
|
&QLocalServer::newConnection,
|
||||||
|
this,
|
||||||
|
&SingleApplicationPrivate::slotConnectionEstablished
|
||||||
|
);
|
||||||
|
|
||||||
|
// Reset the number of connections
|
||||||
|
InstancesInfo* inst = static_cast <InstancesInfo*>( memory->data() );
|
||||||
|
|
||||||
|
inst->primary = true;
|
||||||
|
inst->primaryPid = q->applicationPid();
|
||||||
|
inst->checksum = blockChecksum();
|
||||||
|
|
||||||
|
instanceNumber = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::startSecondary()
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::connectToPrimary( int msecs, ConnectionType connectionType )
|
||||||
|
{
|
||||||
|
// Connect to the Local Server of the Primary Instance if not already
|
||||||
|
// connected.
|
||||||
|
if( socket == nullptr ) {
|
||||||
|
socket = new QLocalSocket();
|
||||||
|
}
|
||||||
|
|
||||||
|
// If already connected - we are done;
|
||||||
|
if( socket->state() == QLocalSocket::ConnectedState )
|
||||||
|
return;
|
||||||
|
|
||||||
|
// If not connect
|
||||||
|
if( socket->state() == QLocalSocket::UnconnectedState ||
|
||||||
|
socket->state() == QLocalSocket::ClosingState ) {
|
||||||
|
socket->connectToServer( blockServerName );
|
||||||
|
}
|
||||||
|
|
||||||
|
// Wait for being connected
|
||||||
|
if( socket->state() == QLocalSocket::ConnectingState ) {
|
||||||
|
socket->waitForConnected( msecs );
|
||||||
|
}
|
||||||
|
|
||||||
|
// Initialisation message according to the SingleApplication protocol
|
||||||
|
if( socket->state() == QLocalSocket::ConnectedState ) {
|
||||||
|
// Notify the parent that a new instance had been started;
|
||||||
|
QByteArray initMsg;
|
||||||
|
QDataStream writeStream(&initMsg, QIODevice::WriteOnly);
|
||||||
|
|
||||||
|
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
|
||||||
|
writeStream.setVersion(QDataStream::Qt_5_6);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
writeStream << blockServerName.toLatin1();
|
||||||
|
writeStream << static_cast<quint8>(connectionType);
|
||||||
|
writeStream << instanceNumber;
|
||||||
|
quint16 checksum = qChecksum(initMsg.constData(), static_cast<quint32>(initMsg.length()));
|
||||||
|
writeStream << checksum;
|
||||||
|
|
||||||
|
// The header indicates the message length that follows
|
||||||
|
QByteArray header;
|
||||||
|
QDataStream headerStream(&header, QIODevice::WriteOnly);
|
||||||
|
|
||||||
|
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
|
||||||
|
headerStream.setVersion(QDataStream::Qt_5_6);
|
||||||
|
#endif
|
||||||
|
headerStream << static_cast <quint64>( initMsg.length() );
|
||||||
|
|
||||||
|
socket->write( header );
|
||||||
|
socket->write( initMsg );
|
||||||
|
socket->flush();
|
||||||
|
socket->waitForBytesWritten( msecs );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
quint16 SingleApplicationPrivate::blockChecksum()
|
||||||
|
{
|
||||||
|
return qChecksum(
|
||||||
|
static_cast <const char *>( memory->data() ),
|
||||||
|
offsetof( InstancesInfo, checksum )
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
qint64 SingleApplicationPrivate::primaryPid()
|
||||||
|
{
|
||||||
|
qint64 pid;
|
||||||
|
|
||||||
|
memory->lock();
|
||||||
|
InstancesInfo* inst = static_cast<InstancesInfo*>( memory->data() );
|
||||||
|
pid = inst->primaryPid;
|
||||||
|
memory->unlock();
|
||||||
|
|
||||||
|
return pid;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Executed when a connection has been made to the LocalServer
|
||||||
|
*/
|
||||||
|
void SingleApplicationPrivate::slotConnectionEstablished()
|
||||||
|
{
|
||||||
|
QLocalSocket *nextConnSocket = server->nextPendingConnection();
|
||||||
|
connectionMap.insert(nextConnSocket, ConnectionInfo());
|
||||||
|
|
||||||
|
QObject::connect(nextConnSocket, &QLocalSocket::aboutToClose,
|
||||||
|
[nextConnSocket, this]() {
|
||||||
|
auto &info = connectionMap[nextConnSocket];
|
||||||
|
Q_EMIT this->slotClientConnectionClosed( nextConnSocket, info.instanceId );
|
||||||
|
}
|
||||||
|
);
|
||||||
|
|
||||||
|
QObject::connect(nextConnSocket, &QLocalSocket::disconnected,
|
||||||
|
[nextConnSocket, this](){
|
||||||
|
connectionMap.remove(nextConnSocket);
|
||||||
|
nextConnSocket->deleteLater();
|
||||||
|
}
|
||||||
|
);
|
||||||
|
|
||||||
|
QObject::connect(nextConnSocket, &QLocalSocket::readyRead,
|
||||||
|
[nextConnSocket, this]() {
|
||||||
|
auto &info = connectionMap[nextConnSocket];
|
||||||
|
switch(info.stage) {
|
||||||
|
case StageHeader:
|
||||||
|
readInitMessageHeader(nextConnSocket);
|
||||||
|
break;
|
||||||
|
case StageBody:
|
||||||
|
readInitMessageBody(nextConnSocket);
|
||||||
|
break;
|
||||||
|
case StageConnected:
|
||||||
|
Q_EMIT this->slotDataAvailable( nextConnSocket, info.instanceId );
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
};
|
||||||
|
}
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::readInitMessageHeader( QLocalSocket *sock )
|
||||||
|
{
|
||||||
|
if (!connectionMap.contains( sock )) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if( sock->bytesAvailable() < ( qint64 )sizeof( quint64 ) ) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
QDataStream headerStream( sock );
|
||||||
|
|
||||||
|
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
|
||||||
|
headerStream.setVersion( QDataStream::Qt_5_6 );
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// Read the header to know the message length
|
||||||
|
quint64 msgLen = 0;
|
||||||
|
headerStream >> msgLen;
|
||||||
|
ConnectionInfo &info = connectionMap[sock];
|
||||||
|
info.stage = StageBody;
|
||||||
|
info.msgLen = msgLen;
|
||||||
|
|
||||||
|
if ( sock->bytesAvailable() >= (qint64) msgLen ) {
|
||||||
|
readInitMessageBody( sock );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::readInitMessageBody( QLocalSocket *sock )
|
||||||
|
{
|
||||||
|
Q_Q(SingleApplication);
|
||||||
|
|
||||||
|
if (!connectionMap.contains( sock )) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
ConnectionInfo &info = connectionMap[sock];
|
||||||
|
if( sock->bytesAvailable() < ( qint64 )info.msgLen ) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Read the message body
|
||||||
|
QByteArray msgBytes = sock->read(info.msgLen);
|
||||||
|
QDataStream readStream(msgBytes);
|
||||||
|
|
||||||
|
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
|
||||||
|
readStream.setVersion( QDataStream::Qt_5_6 );
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// server name
|
||||||
|
QByteArray latin1Name;
|
||||||
|
readStream >> latin1Name;
|
||||||
|
|
||||||
|
// connection type
|
||||||
|
ConnectionType connectionType = InvalidConnection;
|
||||||
|
quint8 connTypeVal = InvalidConnection;
|
||||||
|
readStream >> connTypeVal;
|
||||||
|
connectionType = static_cast <ConnectionType>( connTypeVal );
|
||||||
|
|
||||||
|
// instance id
|
||||||
|
quint32 instanceId = 0;
|
||||||
|
readStream >> instanceId;
|
||||||
|
|
||||||
|
// checksum
|
||||||
|
quint16 msgChecksum = 0;
|
||||||
|
readStream >> msgChecksum;
|
||||||
|
|
||||||
|
const quint16 actualChecksum = qChecksum( msgBytes.constData(), static_cast<quint32>( msgBytes.length() - sizeof( quint16 ) ) );
|
||||||
|
|
||||||
|
bool isValid = readStream.status() == QDataStream::Ok &&
|
||||||
|
QLatin1String(latin1Name) == blockServerName &&
|
||||||
|
msgChecksum == actualChecksum;
|
||||||
|
|
||||||
|
if( !isValid ) {
|
||||||
|
sock->close();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
info.instanceId = instanceId;
|
||||||
|
info.stage = StageConnected;
|
||||||
|
|
||||||
|
if( connectionType == NewInstance ||
|
||||||
|
( connectionType == SecondaryInstance &&
|
||||||
|
options & SingleApplication::Mode::SecondaryNotification ) )
|
||||||
|
{
|
||||||
|
Q_EMIT q->instanceStarted();
|
||||||
|
}
|
||||||
|
|
||||||
|
if (sock->bytesAvailable() > 0) {
|
||||||
|
Q_EMIT this->slotDataAvailable( sock, instanceId );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::slotDataAvailable( QLocalSocket *dataSocket, quint32 instanceId )
|
||||||
|
{
|
||||||
|
Q_Q(SingleApplication);
|
||||||
|
Q_EMIT q->receivedMessage( instanceId, dataSocket->readAll() );
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::slotClientConnectionClosed( QLocalSocket *closedSocket, quint32 instanceId )
|
||||||
|
{
|
||||||
|
if( closedSocket->bytesAvailable() > 0 )
|
||||||
|
Q_EMIT slotDataAvailable( closedSocket, instanceId );
|
||||||
|
}
|
|
@ -0,0 +1,99 @@
|
||||||
|
// The MIT License (MIT)
|
||||||
|
//
|
||||||
|
// Copyright (c) Itay Grudev 2015 - 2016
|
||||||
|
//
|
||||||
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
// of this software and associated documentation files (the "Software"), to deal
|
||||||
|
// in the Software without restriction, including without limitation the rights
|
||||||
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
// copies of the Software, and to permit persons to whom the Software is
|
||||||
|
// furnished to do so, subject to the following conditions:
|
||||||
|
//
|
||||||
|
// The above copyright notice and this permission notice shall be included in
|
||||||
|
// all copies or substantial portions of the Software.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
// THE SOFTWARE.
|
||||||
|
|
||||||
|
//
|
||||||
|
// W A R N I N G !!!
|
||||||
|
// -----------------
|
||||||
|
//
|
||||||
|
// This file is not part of the SingleApplication API. It is used purely as an
|
||||||
|
// implementation detail. This header file may change from version to
|
||||||
|
// version without notice, or may even be removed.
|
||||||
|
//
|
||||||
|
|
||||||
|
#ifndef SINGLEAPPLICATION_P_H
|
||||||
|
#define SINGLEAPPLICATION_P_H
|
||||||
|
|
||||||
|
#include <QtCore/QSharedMemory>
|
||||||
|
#include <QtNetwork/QLocalServer>
|
||||||
|
#include <QtNetwork/QLocalSocket>
|
||||||
|
#include "singleapplication.h"
|
||||||
|
|
||||||
|
struct InstancesInfo {
|
||||||
|
bool primary;
|
||||||
|
quint32 secondary;
|
||||||
|
qint64 primaryPid;
|
||||||
|
quint16 checksum;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct ConnectionInfo {
|
||||||
|
explicit ConnectionInfo() :
|
||||||
|
msgLen(0), instanceId(0), stage(0) {}
|
||||||
|
qint64 msgLen;
|
||||||
|
quint32 instanceId;
|
||||||
|
quint8 stage;
|
||||||
|
};
|
||||||
|
|
||||||
|
class SingleApplicationPrivate : public QObject {
|
||||||
|
Q_OBJECT
|
||||||
|
public:
|
||||||
|
enum ConnectionType : quint8 {
|
||||||
|
InvalidConnection = 0,
|
||||||
|
NewInstance = 1,
|
||||||
|
SecondaryInstance = 2,
|
||||||
|
Reconnect = 3
|
||||||
|
};
|
||||||
|
enum ConnectionStage : quint8 {
|
||||||
|
StageHeader = 0,
|
||||||
|
StageBody = 1,
|
||||||
|
StageConnected = 2,
|
||||||
|
};
|
||||||
|
Q_DECLARE_PUBLIC(SingleApplication)
|
||||||
|
|
||||||
|
SingleApplicationPrivate( SingleApplication *q_ptr );
|
||||||
|
~SingleApplicationPrivate();
|
||||||
|
|
||||||
|
void genBlockServerName();
|
||||||
|
void initializeMemoryBlock();
|
||||||
|
void startPrimary();
|
||||||
|
void startSecondary();
|
||||||
|
void connectToPrimary(int msecs, ConnectionType connectionType );
|
||||||
|
quint16 blockChecksum();
|
||||||
|
qint64 primaryPid();
|
||||||
|
void readInitMessageHeader(QLocalSocket *socket);
|
||||||
|
void readInitMessageBody(QLocalSocket *socket);
|
||||||
|
|
||||||
|
SingleApplication *q_ptr;
|
||||||
|
QSharedMemory *memory;
|
||||||
|
QLocalSocket *socket;
|
||||||
|
QLocalServer *server;
|
||||||
|
quint32 instanceNumber;
|
||||||
|
QString blockServerName;
|
||||||
|
SingleApplication::Options options;
|
||||||
|
QMap<QLocalSocket*, ConnectionInfo> connectionMap;
|
||||||
|
|
||||||
|
public Q_SLOTS:
|
||||||
|
void slotConnectionEstablished();
|
||||||
|
void slotDataAvailable( QLocalSocket*, quint32 );
|
||||||
|
void slotClientConnectionClosed( QLocalSocket*, quint32 );
|
||||||
|
};
|
||||||
|
|
||||||
|
#endif // SINGLEAPPLICATION_P_H
|
|
@ -201,19 +201,29 @@ else()
|
||||||
set(HAVE_TAGLIB_DSFFILE ON)
|
set(HAVE_TAGLIB_DSFFILE ON)
|
||||||
endif()
|
endif()
|
||||||
|
|
||||||
# Use system QtSingleApplication only if explicitly enabled.
|
# SingleApplication
|
||||||
option(USE_SYSTEM_QTSINGLEAPPLICATION "Use system QtSingleApplication library" OFF)
|
find_library(SINGLEAPPLICATION singleapplication)
|
||||||
if(USE_SYSTEM_QTSINGLEAPPLICATION)
|
if (SINGLEAPPLICATION_FOUND)
|
||||||
message(STATUS "Using system QtSingleApplication library")
|
option(USE_SYSTEM_SINGLEAPPLICATION "Use system SingleApplication library" ON)
|
||||||
find_path(QTSINGLEAPPLICATION_INCLUDE_DIRS qtsingleapplication.h PATH_SUFFIXES qt5/QtSolutions)
|
else(SINGLEAPPLICATION_FOUND)
|
||||||
find_library(QTSINGLEAPPLICATION_LIBRARIES Qt5Solutions_SingleApplication-2.6)
|
option(USE_SYSTEM_SINGLEAPPLICATION "Use system SingleApplication library" OFF)
|
||||||
find_library(QTSINGLECOREAPPLICATION_LIBRARIES Qt5Solutions_SingleCoreApplication-2.6)
|
endif(SINGLEAPPLICATION_FOUND)
|
||||||
else(USE_SYSTEM_QTSINGLEAPPLICATION)
|
if(USE_SYSTEM_SINGLEAPPLICATION)
|
||||||
message(STATUS "Using builtin QtSingleApplication library")
|
if (NOT SINGLEAPPLICATION_FOUND)
|
||||||
add_subdirectory(3rdparty/qtsingleapplication)
|
message(FATAL_ERROR "Missing SingleApplication")
|
||||||
set(QTSINGLEAPPLICATION_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/qtsingleapplication)
|
endif()
|
||||||
set(QTSINGLEAPPLICATION_LIBRARIES qtsingleapplication)
|
message(STATUS "Using system SingleApplication library")
|
||||||
endif(USE_SYSTEM_QTSINGLEAPPLICATION)
|
else(USE_SYSTEM_SINGLEAPPLICATION)
|
||||||
|
message(STATUS "Using builtin SingleApplication library")
|
||||||
|
add_subdirectory(3rdparty/singleapplication)
|
||||||
|
set(SINGLEAPPLICATION_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/singleapplication)
|
||||||
|
set(SINGLEAPPLICATION_LIBRARIES singleapplication)
|
||||||
|
endif(USE_SYSTEM_SINGLEAPPLICATION)
|
||||||
|
if(${CMAKE_VERSION} GREATER_EQUAL 3.12)
|
||||||
|
add_compile_definitions(QAPPLICATION_CLASS=QApplication)
|
||||||
|
else()
|
||||||
|
add_definitions(-DQAPPLICATION_CLASS=QApplication)
|
||||||
|
endif()
|
||||||
|
|
||||||
# Qocoa
|
# Qocoa
|
||||||
set(QOCOA_LIBRARIES Qocoa)
|
set(QOCOA_LIBRARIES Qocoa)
|
||||||
|
|
|
@ -257,9 +257,9 @@ Files: 3rdparty/qocoa/*
|
||||||
Copyright: 2011, Mike McQuaid <mike@mikemcquaid.com>
|
Copyright: 2011, Mike McQuaid <mike@mikemcquaid.com>
|
||||||
License: Expat
|
License: Expat
|
||||||
|
|
||||||
Files: 3rdparty/qtsingleapplication/*
|
Files: 3rdparty/singleapplication/*
|
||||||
Copyright: 2010, Nokia Corporation and/or its subsidiary(-ies).
|
Copyright: 2015-2018, Itay Grudev
|
||||||
License: BSD-3-clause
|
License: MIT
|
||||||
|
|
||||||
Files: 3rdparty/taglib/*
|
Files: 3rdparty/taglib/*
|
||||||
Copyright: 2002-2008, Scott Wheeler
|
Copyright: 2002-2008, Scott Wheeler
|
||||||
|
|
|
@ -71,8 +71,7 @@ endif()
|
||||||
link_directories(${TAGLIB_LIBRARY_DIRS})
|
link_directories(${TAGLIB_LIBRARY_DIRS})
|
||||||
include_directories(${TAGLIB_INCLUDE_DIRS})
|
include_directories(${TAGLIB_INCLUDE_DIRS})
|
||||||
|
|
||||||
include_directories(${QTSINGLEAPPLICATION_INCLUDE_DIRS})
|
include_directories(${SINGLEAPPLICATION_INCLUDE_DIRS})
|
||||||
include_directories(${QTSINGLECOREAPPLICATION_INCLUDE_DIRS})
|
|
||||||
|
|
||||||
include_directories(${CMAKE_SOURCE_DIR}/ext/libstrawberry-common)
|
include_directories(${CMAKE_SOURCE_DIR}/ext/libstrawberry-common)
|
||||||
include_directories(${CMAKE_SOURCE_DIR}/ext/libstrawberry-tagreader)
|
include_directories(${CMAKE_SOURCE_DIR}/ext/libstrawberry-tagreader)
|
||||||
|
@ -922,8 +921,7 @@ target_link_libraries(strawberry_lib
|
||||||
${CHROMAPRINT_LIBRARIES}
|
${CHROMAPRINT_LIBRARIES}
|
||||||
${SQLITE_LIBRARIES}
|
${SQLITE_LIBRARIES}
|
||||||
${CMAKE_THREAD_LIBS_INIT}
|
${CMAKE_THREAD_LIBS_INIT}
|
||||||
${QTSINGLEAPPLICATION_LIBRARIES}
|
${SINGLEAPPLICATION_LIBRARIES}
|
||||||
${QTSINGLECOREAPPLICATION_LIBRARIES}
|
|
||||||
${QOCOA_LIBRARIES}
|
${QOCOA_LIBRARIES}
|
||||||
z
|
z
|
||||||
)
|
)
|
||||||
|
@ -1032,7 +1030,7 @@ if (UNIX AND NOT APPLE)
|
||||||
endif ()
|
endif ()
|
||||||
endif ()
|
endif ()
|
||||||
|
|
||||||
add_dependencies(strawberry_lib qtsingleapplication)
|
add_dependencies(strawberry_lib singleapplication)
|
||||||
|
|
||||||
|
|
||||||
###############################################################################
|
###############################################################################
|
||||||
|
|
|
@ -1767,10 +1767,12 @@ void MainWindow::PlaylistEditFinished(const QModelIndex &index) {
|
||||||
if (index == playlist_menu_index_) SelectionSetValue();
|
if (index == playlist_menu_index_) SelectionSetValue();
|
||||||
}
|
}
|
||||||
|
|
||||||
void MainWindow::CommandlineOptionsReceived(const QString &string_options) {
|
void MainWindow::CommandlineOptionsReceived(const quint32 instanceId, const QByteArray &string_options) {
|
||||||
|
|
||||||
|
Q_UNUSED(instanceId);
|
||||||
|
|
||||||
CommandlineOptions options;
|
CommandlineOptions options;
|
||||||
options.Load(string_options.toLatin1());
|
options.Load(string_options);
|
||||||
|
|
||||||
if (options.is_empty()) {
|
if (options.is_empty()) {
|
||||||
show();
|
show();
|
||||||
|
|
|
@ -229,7 +229,7 @@ signals:
|
||||||
void AddFolder();
|
void AddFolder();
|
||||||
void AddCDTracks();
|
void AddCDTracks();
|
||||||
|
|
||||||
void CommandlineOptionsReceived(const QString& string_options);
|
void CommandlineOptionsReceived(const quint32 instanceId, const QByteArray &string_options);
|
||||||
|
|
||||||
void CheckForUpdates();
|
void CheckForUpdates();
|
||||||
|
|
||||||
|
|
17
src/main.cpp
17
src/main.cpp
|
@ -48,7 +48,7 @@
|
||||||
#endif // Q_OS_WIN32
|
#endif // Q_OS_WIN32
|
||||||
|
|
||||||
#include <QObject>
|
#include <QObject>
|
||||||
#include <QCoreApplication>
|
#include <QApplication>
|
||||||
#include <QStandardPaths>
|
#include <QStandardPaths>
|
||||||
#include <QFileDevice>
|
#include <QFileDevice>
|
||||||
#include <QIODevice>
|
#include <QIODevice>
|
||||||
|
@ -68,8 +68,7 @@
|
||||||
|
|
||||||
#include "core/logging.h"
|
#include "core/logging.h"
|
||||||
|
|
||||||
#include <qtsingleapplication.h>
|
#include <singleapplication.h>
|
||||||
#include <qtsinglecoreapplication.h>
|
|
||||||
|
|
||||||
#ifdef HAVE_DBUS
|
#ifdef HAVE_DBUS
|
||||||
# include "core/mpris.h"
|
# include "core/mpris.h"
|
||||||
|
@ -126,14 +125,14 @@ int main(int argc, char* argv[]) {
|
||||||
{
|
{
|
||||||
// Only start a core application now so we can check if there's another Strawberry running without needing an X server.
|
// Only start a core application now so we can check if there's another Strawberry running without needing an X server.
|
||||||
// This MUST be done before parsing the commandline options so QTextCodec gets the right system locale for filenames.
|
// This MUST be done before parsing the commandline options so QTextCodec gets the right system locale for filenames.
|
||||||
QtSingleCoreApplication a(argc, argv);
|
SingleApplication a(argc, argv, true, SingleApplication::Mode::User);
|
||||||
Utilities::CheckPortable();
|
Utilities::CheckPortable();
|
||||||
|
|
||||||
// Parse commandline options - need to do this before starting the full QApplication so it works without an X server
|
// Parse commandline options - need to do this before starting the full QApplication so it works without an X server
|
||||||
if (!options.Parse()) return 1;
|
if (!options.Parse()) return 1;
|
||||||
logging::SetLevels(options.log_levels());
|
logging::SetLevels(options.log_levels());
|
||||||
|
|
||||||
if (a.isRunning()) {
|
if (a.isSecondary()) {
|
||||||
if (options.is_empty()) {
|
if (options.is_empty()) {
|
||||||
qLog(Info) << "Strawberry is already running - activating existing window";
|
qLog(Info) << "Strawberry is already running - activating existing window";
|
||||||
}
|
}
|
||||||
|
@ -160,17 +159,15 @@ int main(int argc, char* argv[]) {
|
||||||
|
|
||||||
Utilities::IncreaseFDLimit();
|
Utilities::IncreaseFDLimit();
|
||||||
|
|
||||||
QtSingleApplication a(argc, argv);
|
SingleApplication a(argc, argv, false, SingleApplication::Mode::User);
|
||||||
|
|
||||||
#if defined(Q_OS_MACOS) && defined(USE_BUNDLE)
|
#if defined(Q_OS_MACOS) && defined(USE_BUNDLE)
|
||||||
qLog(Debug) << "Looking for resources in" << QCoreApplication::applicationDirPath() + "/" + USE_BUNDLE_DIR;
|
qLog(Debug) << "Looking for resources in" << QCoreApplication::applicationDirPath() + "/" + USE_BUNDLE_DIR;
|
||||||
QCoreApplication::setLibraryPaths(QStringList() << QCoreApplication::applicationDirPath() + "/" + USE_BUNDLE_DIR);
|
QCoreApplication::setLibraryPaths(QStringList() << QCoreApplication::applicationDirPath() + "/" + USE_BUNDLE_DIR);
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
a.setQuitOnLastWindowClosed(false);
|
|
||||||
|
|
||||||
// Do this check again because another instance might have started by now
|
// Do this check again because another instance might have started by now
|
||||||
if (a.isRunning() && a.sendMessage(options.Serialize(), 5000)) {
|
if (a.isSecondary() && a.sendMessage(options.Serialize(), 5000)) {
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -232,7 +229,7 @@ int main(int argc, char* argv[]) {
|
||||||
#ifdef HAVE_DBUS
|
#ifdef HAVE_DBUS
|
||||||
QObject::connect(&mpris, SIGNAL(RaiseMainWindow()), &w, SLOT(Raise()));
|
QObject::connect(&mpris, SIGNAL(RaiseMainWindow()), &w, SLOT(Raise()));
|
||||||
#endif
|
#endif
|
||||||
QObject::connect(&a, SIGNAL(messageReceived(QString)), &w, SLOT(CommandlineOptionsReceived(QString)));
|
QObject::connect(&a, SIGNAL(receivedMessage(quint32, QByteArray)), &w, SLOT(CommandlineOptionsReceived(quint32, QByteArray)));
|
||||||
|
|
||||||
int ret = a.exec();
|
int ret = a.exec();
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue